agl 03. yeu cau bo sung linh vuc hoa 2012

VN PHNG CNG NHN CHT LNG Bureau of Accreditation (BoA)

YU CU B SUNG

CNG NHN CC PHNG TH NGHIM

LNH VC HA

Supplementary requirement for accreditation

in the field of chemical testing

M s/Code: AGL 03 Ln ban hnh/Issue number: 04.12 Ngy ban hnh/ Issue date: 06/2012

Yu cu b sung cng nhn cc phng th nghim lnh vc Ha Supplementary requirements for accreditation in the field of Chemical testing

AGL 03 Ln ban hnh: 4.12 Trang: 1/34

Ni dung

Trang

Phn 1 Gii thiu 3

Mc ch 3

Phm vi 3

Chun mc cng nhn 3

Cu trc 3

Phn 2 Yu cu b sung cng nhn cc phng th nghim lnh vc Ha

4

4.1 T chc 4

4.2 H thng qun l 4

4.5 Hp ng ph th nghim 5

4.12 Hnh ng phng nga 5

4.13 Kim sot h s 6

5.2 Nhn s 6

5.3 Tin nghi v iu kin mi trng 7

5.4 Phng php th v xc nhn gi tr s dng ca phng php 8

5.5 Kim sot thit b, ha cht 10

5.6 Lin kt chun o lng 11

5.7 Ly mu 12

5.8 Qun l mu 13

5.9 m bo cht lng kt qu th nghim 14

5.10 Bo co kt qu 15

Phn 3 Chu k hiu chun, kim tra thit b thng thng 17

Ph lc Hng dn hiu chun mt s thit b 28



Supplementary requirement for accreditation

in the field of chemical testing

Content

Page

Section 1 Introduction 3

Purpose 3

Scope 3

Accreditation criteria 3

Structure 3

Section 2 Supplementary requirement for accreditation in the field of chemical testing

4

4.1 Organization 4

4.2 Management system 4

4.5 Subcontracting of test 5

4.12 Preventive action 5

4.13 Control of record 6

5.2 Personnel 6

5.3 Accommodation and environmental conditions 7

5.4 Test methods and method validation 8

5.5 Equipment, Chemical 10

5.6 Measurement traceability 11

5.7 Sampling 12

5.8 Handling of test items 13

5.9 Assuring the quality of test and calibration results 14

5.10 Reporting the results 15

Section 3 Calibration, checking interval for commonly used chemical testing equipment

17

Annex Guide to calibration equipment 28



PHN 1 GII THIU MC CH

Tiu chun quc t ISO/IEC 17025 "Yu cu chung v nng lc ca phng th nghim v hiu chun" cp cc yu cu h thng qun l v cc yu cu k thut cho cc phng th nghim p dng. Cc yu cu trong tiu chun trn c xy dng p dng cho tt c cc lnh vc th nghim v hiu chun do vy Vn phng cng nhn cht lng xy dng thm cc ti liu b sung din gii cho tng lnh vc hiu chun hoc th nghim c th cng nh cho cc k thut th nghim, hiu chun. PHM VI P DNG

Ti liu ny cp cc yu cu chi tit v c th p dng cho cng nhn i vi cc phng th nghim (PTN) thuc lnh vc ho.

Cc yu cu cng nhn cho cc PTN ho khng ph thuc vo qui m ca PTN, s lng cc php th nghim m PTN thc hin hoc s lng nhn vin. CHUN MC CNG NHN

Chun mc cng nhn phng th nghim lnh

vc ha bao gm: - ISO/IEC 17025 : 2005 - "Yu cu chung

v nng lc ca cc phng th nghim v hiu chun".

- Yu cu b sung cng nhn cho phng th nghim lnh vc ho.

- Cc chnh sch ca BoA lin quan cng

nhn phng th nghim - Cc vn bn php qui lin quan n hot

ng th nghim trong lnh vc ha. Th tc cng nhn phng th nghim theo ti liu APL 01

Ngoi ra cn c cc ti liu k thut h tr cc PTN lin quan ti cc lnh vc k thut c th. Mt s ti liu k thut c vin dn trong ti liu ny. Cc ti liu k thut nhm a ra cc hng dn do khng phi l cc yu cu

SECTION 1 INTRODUCTION PURPOSE

International Standard ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories included requirements of management system and technical for laboratories. These requirements are designed to apply to all types of testing and calibration and therefore BoA often need to be developed supplementary requirements to interpreted with respect to the type of calibration or testing concerned, and the techniques involved SCOPE

This document provides detailed and specified requirements to accreditation for Chemical testing laboratories.

Requirement for Chemical testing laboratory is applicable to all of Chemical testing laboratories regardless of the organization size, the number of personnel or extent of the scope of testing

ACCREDITATION CRITERIA

Accreditation criteria for chemical testing

including: - ISO/IEC 17025 : 2005 - General

requirements for the competence of testing and calibration laboratories

- Supplementary requirements for accreditation in the field of Chemical testing

- BoA policies concerning accreditation for laboratories

- Regulation concerning accreditation for chemical testing

Accreditation assessment procedure for laboratories is APL 01

Besides there are some technical documents to assist laboratory concerning specified technical. Technical documents have been reference in this document. Technical documents assist for laboratory so that it is not requirement for



cng nhn tr khi chng c nu c th trong ti liu ny. CU TRC

Ti liu ny c 3 phn chnh:

Phn 1: Gii thiu

Phn 2: Cc yu cu b sung cng nhn cho phng th nghim thuc lnh vc ha

Phn 3: Chu k hiu chun thit b

Ph lc 1: Hng dn hiu chun mt s thit b

Cc yu cu trong phn 2 ca ti liu ny c trnh by theo th t ca cc yu cu trong tiu chun ISO/IEC 17025, c th c mt s yu cu trong tiu chun ISO/IEC 17025 s khng c yu cu b sung.

Cc ni dung c k hiu iu mc trong du ngoc ( ) l yu cu bt buc cn cc ni dung c in ch nghing l cc hng dn, gii thch thm lm r ngha ca cc yu cu.

accreditation unless mention in this document. STRUCTURE

This document have 3 main section

Section 1: Introduction

Section 2: Supplementary requirements for accreditation in the field of chemical testing

Section 3: Calibration interval for testing equipment

Annex 1: Guide to calibration equipment

The requirements in section 2 have been presented base on section of requirement in the standard ISO/IEC 17025, there are some requirements in ISO/IEC 17025 does not have supplementary requirement.

All content mention in mark ( ) are mandatory requirements and all content mention in italic are guidelines, interpretation for more clear of the requirement.

PHN 2 YU CU B SUNG CNG NHN PTN LNH VC HA 4. CC YU CU QUN L 4.1. T chc

(1) Nhn vin PTN c trch nhim lin quan n hot ng sn xut hoc bn hng, qung co th phi c chnh sch r rng xc nh cch thc m bo tnh khch quan ca h i vi trch nhim th nghim.

(2) Trng hp PTN c thc hin th nghim ti hin trng, ti PTN di ng phi c cc th tc m bo qun l cho hot ng th nghim .

4.2. H thng qun l

(1) Trong ti liu h thng qun l phi vin dn ti ngi c thm quyn k c ph duyt, phm vi cng nhn v chnh sch s dng biu tng cng nhn ca BoA.

SECTION 2 SUPPLEMENTARY REQUIREMENTS FOR ACCREDITATION IN THE FIELD OF CHEMICAL TESTING 4. MANAGEMENT REQUIREMENTS 4.1. Organization

(1) For laboratory staff who may also have production or marketing related responsibilities, clear policies shall be available to define how impartiality is assured for their testing responsibilities

(2) For laboratory conduct tests at sites away from its permanent facilities, or in mobile facilities shall have procedures to manage for those tests. 4.2. Management system

(1) Management system document shall reference to signatory authorities, accredited scope and policy for using BoA logo.



4.5. Hp ng ph v th nghim

(1) PTN phi tun th yu cu 5.10.6 ca tiu chun ISO/IEC 17025:2005 v cc yu cu bo co kt qu th nghim ca nh thu ph.

(2) Trng hp PTN s dng nh thu ph cho

cc php th ng k cng nhn th phi s

dng nh thu ph c nng lc. Nh thu

ph c nng lc phi l mt PTN c BoA

cng nhn hoc mt phng th nghim c

cng nhn bi mt t chc cng nhn tham

gia tho c tha nhn ln nhau vi BoA.

Tt c cc kt qu do nh thu ph thc hin

phi c nu trong bo co th nghim ca

PTN.

(3) Trng hp PTN s dng nh thu ph

thc hin mt phn php th nh s dng

thit b th nghim th PTN cn nh gi v

m bo thit b p ng yu cu ca

phng php th v qui nh v kim sot

thit b ca PTN.

(4) PTN phi nh k xem xt tnh trng

cng nhn ca nh thu ph.

Cc thng tin v tnh trng v phm vi cng

nhn c th tm trn website

www.boa.gov.vn hoc lin h vi t chc

cng nhn. PTN c th s dng nh thu

ph cha c cng nhn cho cc ch tiu

th nghim m PTN khng ng k cng

nhn. 4.12. Hnh ng phng nga

Hnh ng phng nga l mt qu trnh ch

ng xc nh c hi ci tin ch khng

phi thc hin sa cha, khc phc nhng

vn pht sinh hoc phn nn.

4.5 Subcontracting of tests and calibrations

(1) Laboratory shall conformity with clause 5.10.6 of ISO/IEC 17025:2005 the results of the subcontracted service are incorporated into the laboratorys test reports.

(2) Where laboratory use subcontractor for

accredited tests shall use a competent

subcontractor. Competent subcontractors are

accredited laboratories by BoA or by one of

BoAs mutual recognition partners. All of

test results by accredited subcontractor shall

be covered by an appropriate endorsed

report.

(3) Where laboratory use subcontractor for

partial of test such as use equipment of

laboratory shall evaluate and have evidence

that equipment fitness requirement for test

method and control equipment.

(4) The accreditation status of subcontractors

shall be regularly reviewed to ensure

currency.

Information on the accreditation status and

scope of accreditation may be found at

BoAs website www.boa.gov.vn or by

contacting accredited laboratory.

Laboratory may use unaccredited

laboratory for tests that outside scope of the

accredited laboratory. 4.12. Preventive action

Preventive action is a proactive process to

identify improvement opportunities, rather

than a reaction to the identification of

problems or complaints.



(1) Cc cng c qun l cht lng ton din

nh: phng cch tho lun theo nhm

(brainstorming), s nguyn nhn v kt

qu, biu kim sot, biu pareto ... cn

c s dng h tr thc hin phng

nga.

Phng th nghim cng nn c cch thc

khuyn khch v tip nhn cc ng gp

kin ci tin ca nhn vin 4.13. Kim sot h s (1) Thi gian lu gi h s khng c di 3

nm tr khi c giao c hp ng hoc quy

nh php l. (2) H s k thut (h s th nghim) cn bao gm cc thng tin sau:

- nhn dng mu;

- xc nhn phng php th nghim;

- thi gian th nghim (thi gian bt u,

thi gian kt thc);

- chun, thit b th nghim;

- d liu quan trc gc, tnh ton kt qu

bao gm c du hiu, d liu c th

nhn bit, truy xut ti iu kin thc

hin th nghim;

- nhn vin thc hin th nghim;

- bng chng v kim tra, xc nhn vic

tnh ton v truyn d liu.

- cc thng tin c th qui nh trong

phng php th, cc vn bn hp ng

hoc cc qui nh do php lut yu cu.

5. CC YU CU K THUT 5.2. Nhn s

(1) Cn b kim sot k thut ca PTN phi c

t nht 2 nm kinh nghim lin tc trong lnh

vc th nghim c phn cng kim sot.

(2) Nhn vin mi cn c o to thc hnh

(1) Total quality management tools such as

brainstorming, flowcharting, Fishbone

diagram, Pareto chart etc shall be use to

assist for preventive actions.

Laboratory should be given to providing

staff with a formal mechanism for

contributing suggestions for improvement.

Control of records (1) Unless otherwise prescribed by legislation or

contractual obligation, retention times will

not be less than three years. (2) Technical records (test records) shall include the following:

- The sample identification;

- The test document identification;

- Date of test (time start and finish);

- The identity of reference standard and

equipment use for the test;

- Original test observations and

calculations included data, sign that could

traceability to test condition;

- The identify of the person performing the

test;

- An indication that calculations and

manual data transfers have been checked;

- Any other information specified in the

test method, other contractual documents

or relevant statutory regulations. 5. TECHNICAL REQUIREMENTS 5.2. Personnel (1) Technical manager who control technical

any scope of tests shall have at least 2 years

uninterrupted experiences on that scope.

(2) New staff shall be training to conduct tests



th nghim t nht 3 thng v cn c h s

th hin c kim tra vic thc hin th

nghim t c chnh xc theo yu cu

ca cc php th c th trc khi giao nhim

v th nghim chnh thc. Cc cn b mi

c giao nhim v th nghim c th cn

c cn b gim st t nht l 1 nm.

Kim tra vic thc hin th nghim c th p

dng hnh thc th nghim lp li, ti lp,

tham gia so snh lin phng, th nghim

trn mu chun, mu thm chun

Th lc ca nhn vin v nhn bit mu km

c th gp kh khn trong khi thc hin mt

vi php th. Nhn bit mu l mt trong

nhng yu cu m qun l PTN nn cn

nhc khi xc nh nhn vin thch hp

thc hin php th.

(3) Bt k th nghim no khng thc hin

PTN chnh (nh th nghim hin trng,

phng th nghim di ng, phng th

nghim tm thi) cng phi c kim sot

k thut y . PTN phi c ngi c thm

quyn k kt qu th nghim mi a im

th nghim.

(4) Nhn vin phi c thng bo, hng dn

cc thng tin lin quan v cc vn v

sinh an ton phng th nghim. 5.3. Tin nghi v iu kin mi trng

(1) PTN cn kim sot mi trng th nghim

m bo khng xy ra nhim bn mu.

(2) Khu vc t thit b, ha cht cn m bo

khng b nh hng ln nhau v m bo an

ton cho phng th nghim.

(3) Khi th nghim ti hin trng, v tr th

at least 3 months and shall have records that

new staff have been conduct the tests and

get accuracy base on requirement of test

methods before assign to become official

analyzer. New staff shall be supervising at

least 1 year.

Laboratory may use method such as

repeatabitability and reproducebility,

participate Proficiency testing/ inter

laboratory comparison, use certified

reference material (CRM) or spike sample

etc.

Eyesight of analyzer to determine color may

be getting difficult when conducts some tests.

Determine color is one of the requirement

that laboratory manager should consider

when define suitable analyzer to do.

(3) Any testing conducted away from the base

laboratory (such as in field

laboratories/permanent facilities, in a

mobile or temporally laboratories) shall also

be under adequate technical control. This

would normally require either the location of

an approved signatory at each facility

(4) Staff shall be announce, guide all of

information concerning laboratory hygiene

and safety. 5.3. Accommodation and environmental conditions (1) Laboratory shall control environmental

conditions to prevent sample contamination.

(2) Equipment area and chemical area shall be

ensure that not effect together and ensure to

safe for laboratory.

(3) When testing in the field, testing sites must

be chosen to minimize the effects of



nghim phi c la chn hn ch ti a

nh hng ca cc iu kin mi trng v

s nhim bn mu.

(4) Tt c cc iu kin mi trng nh hng

kt qu th nghim phi c theo di v

lu h s. 5.4 . Phng php th nghim v xc nhn gi

tr s dng phng php

(1) Phng th nghim phi c v p dng cc th

tc bng vn bn v vic la chn v xc

nhn gi tr s dng ca phng php. Th

tc bao gm chi tit cc bc tin hnh xc

nhn gi tr s dng, cc phng php thng

k c p dng tnh cc thng s nghin

cu. H s xc nhn gi tr s dng ca

phng php phi c lu gi v BoA s

yu cu c xem xt trc hoc trong cc

cuc nh gi.

(2) PTN p dng cc phng php th theo tiu

chun quc gia, quc t, hip hi khoa hc

c chp nhn rng ri trn th gii nh

TCVN, ASTM, APHA, AOACcn c h

s nh gi iu kin c bn - cc ngun lc

theo yu cu ca phng php th v vic

t c kt qu th nghim c chnh xc

nh phng php yu cu hoc nh mong

mun ca PTN. i vi cc phng php

th ban hnh m khng c d liu v

chnh xc th PTN phi xc nh d liu

chnh xc ca php th da trn d liu

nghin cu th nghim. Ton b cc phng

php phi c chun mc loi b nhng

kt qu nghi ng.

(3) Cc phng php th khng tiu chun nh

Phng php do PTN xy dng (phng

php th ni b), phng php theo hng

dn ca nh sn xut thit b cn c lp

thnh vn bn. Phng php th ni b cn

environmental conditions and sample

contamination.

(4) All relevant environmental conditions that

effect to test results shall be control and

recorded. 5.4. Test methods and method validation (1) Laboratory shall have fully documented

procedures for choose and validation

method. That procedure shall be covering

detail of validation method step, statistical

method use to define examine factors.

Validation method records shall be kept and

BoA will be check before or onsite

assessment.

(2) As well as methods published by Vietnam

standard institute, international standard,

prestige technical association such as

TCVN, ASTM, APHA, AOAC ex.

laboratory shall have record to verified that

laboratory have enough capability to conduct

the test and evidence to get all of accuracy

factors that test method required or

laboratory required. Methods published do

not include accuracy data the laboratory

shall determine its own accurate factors

depend on verified data. All methods shall

include criteria for rejecting suspect results.

(3) Nonstandard method such as laboratory

developed methods, equipment producer

methodsshall be documented. Laboratory

developed methods shall be mention clear

materials/products have been test,

performance parameters, criteria for



xc nh r i tng th, ch tiu th, gii

hn chp nhn ca kt qu, c lng

khng m bo.

(4) PTN phi thc hin nghin cu v xc nhn

gi tr s dng i vi phng php khng

tiu chun hoc cc phng php c sa i,

m rng phm vi so vi phng php tiu

chun. PTN phi lu h s lin quan n qu

trnh nghin cu, xc nhn gi tr s dng

bao gm nh gi iu kin c bn - cc

ngun lc thc hin phng php th v

chnh xc ca phng php.

(5) PTN c th xc nhn gi tr s dng ca

phng php bng cch s dng mu chun

hay cht chun c chng nhn hoc so

snh vi phng php tiu chun. Ty thuc

mc v mc ch s dng phng php

m PTN c th cn nhc la chn xc

nhn gi tr s dng ca phng php theo

cc thng s c cp di y:

- Tnh chn lc/tnh c hiu;

- Tnh tuyn tnh;

- nhy;

- chnh xc ( ng v chm);

- Gii hn pht hin v gii hn nh

lng;

- Khong nng ;

- Cc yu t nh hng;

- khng m bo o;

- Tnh lin kt chun.

(6) BoA c th cng nhn cc phng php th

nhanh, phng php th theo b Kit ca nh

cung cp khi PTN c h s v xc nhn

tnh ng n phng php cho cc i

tng th. PTN phi c kh nng khng nh

phng php trong trng hp c tranh ci.

(7) PTN ng k cng nhn vi phm vi cng

nhn khng hn hp (cc nhm cht cn

phn tch, v d thuc tr su hp cht clo)

rejecting suspect results, uncertainty of

measurement.

(4) Laboratory shall validate method for all

nonstandard method or modify method,

extend scope of standard method. Laboratory

shall be studies recorded validate method

including evaluate laboratory capabilities to

perform method and studies accuracy

factors.

(5) Method may be validated by using certified

reference materials or comparison with other

established methods. Depend on

requirement and purpose of using method,

laboratory could consider for choosing

validate factors. The following parameters

require consideration:

- Selectivity;

- Linearity of response;

- Sensitivity;

- Accuracy (trueness and precision);

- Limit of detection and limit of

quantitation;

- Range;

- Robustness/ruggedness;

- Measurement uncertainty;

- Traceability.

(6) BoA accredits for quick tests, producers KIT

tests, Laboratory shall recorded all of

validate data for all materials/products and

laboratory shall have capability to confirm

method if get dispute.

(7) A laboratory seeking accreditation for a

more open scope of accreditation (where

groups of analyses, for example, organ

chlorine pesticides) shall have fully



phi c y cc th tc c vn bn

ha gm cc qui nh nh: vic la chn

phng php, xy dng phng php, xc

nhn gi tr s dng ca phng php, c

cc chun chnh ph hp v c bng chng

v hot ng o to nhn vin. H s cc

th tc ny c xem xt nh mt phn ca

mi cuc nh gi.

(8) PTN ng k cng nhn php th phm vi

m nh thc phm cn thc hin xc nhn

gi tr s dng trn t nht 5 nn mu i

din cho bn cht ca mu thc phm (giu

protein, bo, hydratcacbon, nc).

Phng th nghim c th tham kho ISO 78-2 Hng dn trnh by phng php phn tch ha hc i vi cch trnh by cc phng php th

5.5. Kim sot thit b, ha cht Thit b (1) PTN thc hin hiu chun kim tra v bo tr thit b ni b cn c:

- Phng php hiu chun, bo tr, kim

tra c lp thnh vn bn;

- Ton b d liu th hin vic thc hin

cc hot ng hiu chun, kim tra, bo

tr v ngi thc hin phi c lu h

s;

(2) i vi PTN thc hin hiu chun ni b,

khi cn thit BoA c th thc hin nh gi

o lng v nh gi k thut m bo

rng PTN tun th cc yu cu tng ng

ca ISO/IEC 17025 cho phng hiu chun. Ha cht

(3) PTN phi c th tc kim sot vic tip

nhn, kim tra, s dng, bo qun v thanh

l cc ha cht, thuc th.

documented procedure, covering such

elements as: method selection, method

development, and method validation,

acquisition of appropriate reference

standards or reference materials and staff

training. Records of the application of these

procedures will be reviewed as part of each

assessment.

(8) Laboratory want to conduct parameter with

extend scope such as food shall validate

method at least in 5 matrix representative for

nature of food (high protein, oil, hydrate

carbon, water). ISO 78-2 Chemistry layouts for

standards Part 2: Method of chemical analysis also provides useful guidance.

5.5. Equipment, chemical Equipment (1) Laboratory conduct calibration, check and maintenance by its shelf shall:

- Documented procedure for calibration,

check and maintenance;

- Keep record of full results (including raw

data) for each calibration, check and

maintenance;

(2) BoA may conduct measurement audit and

technical assessment for Laboratory that

carry out in-house calibration to ensure the

laboratory comply with requirement in

ISO/IEC 17025 for calibration.

Chemical (3) Laboratory shall documented procedure for

control chemical including: receive, check,

use, keep in good condition and liquidate.



(4) Nhn gc trn bao b ha cht, thuc th

phi c th hin bng ngn ng m nhn

vin c th c v hiu c v phi c

thng tin v tiu chun k thut ca ha

cht, thuc th nh:

- Tn ha cht

- Cc thnh phn v nng

- Hn s dng

- Cnh bo (nu c)

(5) Cc ha cht, thuc th hoc dung dch

chun PTN pha ch cn c h s th hin

vic thc hin pha ha cht, thuc th hoc

dung dch chun. Trn mi chai ha cht,

thuc th hoc dung dch chun pha ch cn

c nhn vi ni dung sau:

- Tn ha cht

- Nng

- Ngy pha

- Ngi pha

- Hn s dng

- Cnh bo (nu cn thit) 5.6. Lin kt chun o lng

(1) Cc thit b th nghim v hiu chun c

nh hng ng k n kt qu th nghim

(k c cc thit b s dng kim sot iu

kin mi trng c tc ng quan trng, nu

cn) phi c hiu chun bi cc t chc

hiu chun theo qui nh Chnh sch v lin

kt chun APL 02 ca BoA.

(2) Thit b c hiu chun bng cch s dng

cc cht chun, cht chun c chng

nhn hoc cc cht chun pha ch thng

qua vic so snh vi nhng cht chun gc

th phi m bo:

- Cc cht chun kh nng hiu

chun nhng hng mc lin quan ca

thit b trn nhng phm vi o m thit b

(4) Original label of chemical shall be expressed in language that staff could be read and understand and enough specific information of chemical such as:

- Name of chemical;

- Component and concentration;

- Expiry date;

- Warning (if any) ...

(5) Laboratory preparing chemical, solution or

stock solution shall keep records of

preparing chemical, solution or stock

solution process. In chemical, solution or

stock solution bottles shall have label

included information as:

- Name;

- Concentration;

- Date prepare;

- Name of person prepare;

- Expiry date;

- Warning (if any). 5.6. Measurement traceability

(1) Test equipment that has a significant effect

on the reported result (including, where

relevant, instruments used for monitoring

critical environmental conditions) shall be c

calibrated by organization base on

requirement of BoA mention in

Traceability measurement APL 02.

(2) When the laboratory undertakes calibration

of equipment using certified reference

material of reference materials developed

through comparison with certified reference

materials it shall be able to demonstrate that

it has:

- Sufficient reference materials to calibrate

the relevant items of equipment over the

desired measurement ranges;

- Full records of the identity and source of



c yu cu;

- C h s nhn dng v ngun gc mi

cht chun;

- C y cc vn bn v nhng gi tr

qui chiu c xc nh (v khng

m bo o lin quan) ca mi cht

chun bao gm cc chi tit v tnh hiu

lc;

- C thc hin phng nga cn thit bit

c s khc nhau gia dng mu ca

cht chun vi dng mu th nghim

thc t ti phng th nghim, hoc xc

nh v tnh ton nhng nh hng ca

cc dng mu th.

(3) Cht chun phi c cc thng tin sau:

- c tnh ( khng m bo o, nu l

cht chun chng nhn);

- K thut xc nh cc c tnh;

- Thi hn chng nhn c hiu lc (nu

thch hp);

- Thi hn s dng ca cht chun;

- Cc iu kin lu gi;

- Ngy m cht chun s dng ln u.

ISO Guide 31 c cc qui nh chi tit v ni dung chng ch cc cht chun.

5.7. Ly mu

Tiu chun ISO/IEC 17025 p dng cho PTN bao gm c hot ng ly mu. Hot ng ly mu ca cc PTN rt khc nhau. Hot ng ny c th c cc b phn khc trong cng t chc vi PTN thc hin hoc mt t chc hon ton c lp thc hin. BoA khuyn khch PTN ng k cng nhn c hot ng ly mu. Trng hp PTN khng thc hin ly mu c th hng dn cho n v, ngi ly mu v cch thc ly mu v bo qun mu m bo tnh hiu qu ca hot ng th nghim

each reference material;

- Full document of the assigned property

values (and associated measurement

uncertainty) of each reference material

including details of the mode of

validation;

- Taken any necessary precautions to

match the matrices of the reference

materials to those encountered in the

laboratorys test samples, or determined

and accounted for the effects of any non-

matching of matrices.

(3) Reference materials shall be obtained at

least the following information:

- Property values (and associated

uncertainties, if a certified reference

material);

- Technique(s) by which the property

values were established;

- Date of certification;

- Period for which certification if valid;

- Storage conditions.

- Open dated ISO Guide 31 contains more detail on the content of certificates for reference materials.

5.6. Sampling

Scope of International standard ISO/IEC 17025 includes sampling activities. Sampling activities of laboratories are difference. Sampling activities may demand a different part of the laboratory organization or an independent organization. BoA encourages laboratory to seek accreditation for sampling activities. Laboratory may introduce or training for organization or sampling officer to sampling and keep in good condition for sample for ensuring the effectiveness of sampling activities.

(1) When the laboratory has no control over



(1) Nu PTN khng thc hin ly mu th bo

co kt qu th nghim cn ghi r kt qu

ch ng vi mu th. H s tip nhn mu

cn ghi r cc thng tin lin quan n mu

th nh: loi mu, ngy tip nhn, tnh trng

mu, lng mu, iu kin bo qun (nu

c).

(2) Nu hot ng ly mu do b phn khc

thc hin nhng bo co kt qu th nghim

c tuyn b p dng cho c sn phm, l

hng th PTN phi b tr BoA tin hnh

nh gi hot ng ng ly mu bao gm:

- Th tc ly mu c lp thnh vn bn

(c th l cc tiu chun quc gia hoc

quc t). Nu s dng cc phng php

ni b th cn xc nhn gi tr s dng

ca phng php m bo vic ly

mu p ng c mc ch ra.

- Bo co kt qu th nghim phi vin

dn n phng php ly mu 5.8. Qun l mu th nghim

(1) Cc dng c cha mu phi ph hp yu cu

ca phng php ly mu hoc phng php

th v phi kim tra v m bo khng nh

hng n cht lng mu th (khng b r

r, khng thm nc, bin cht hoc nhim

bntrong qu trnh vn chuyn v lu

gi). Nu phng php ly mu v/hoc

phng php th yu cu iu kin bo qun

mu cn c m bo th phi ghi r iu

kin bo qun vo h s ly mu.

(2) Vic nhn dng cc nhn mc phi m bo

r rng, khng h hng, c nhn din

trong sut qu trnh th nghim v d c.

Khng chp nhn vic dn nhn mc ch trn

np.

sampling the test results report shall mention

results only for received sample. The sample

receiving record shall mention detail

following information concerning sample:

sample type, date of receipt, condition of

receipt, sample volume, maintaining

condition (if any).

(2) Where sampling activities conducted by

other part of laboratory but test report has been

stated that the test results for product lot/batch, the

assessment of sampling activities shall be included

as an element of the laboratory assessment as:

- The laboratory shall have documented

sampling procedures (may be national or

international standards). If in house

methods are used, their validity for the

intended purpose shall be demonstrated

by appropriate data.

- The sampling procedure shall be cited on

the test report. 5.8 Handling of test items

(1) Sample container shall be comply with

requirement of sampling procedures or test

procedures and may be necessary to test

container to ensure not effect to sample

(leak-proof, hydrophilic, contamination ex.

During transport and storage). Any

temperature or other environmental

tolerances specified in the method shall be

cited in sampling record.

(2) Identification labels shall be secure, legible

and identify during conducting test.

Labeling on caps or lids alone is not

acceptable.



(3) Nhn vin phng th nghim phi kim tra

trng thi ca mu khi tip nhn. Nu trng

thi khng m bo hoc nu mu khng

nhng khch hng vn yu cu th nghim

m PTN ng cn ghi r tnh trng mu

vo h s tip nhn v c xc nhn ca

khch hng.

(4) Ngoi tr cc trng hp c bit PTN phi

lu gi cc mu th nghim cho n khi c

c tt c cc kt qu, hoc lu gi lu hn

nu cn thit. Mu lu phi c bao gi

trong vt ng thch hp v lu gi iu

kin bo qun ca mu th. 5.9. m bo cht lng kt qu th nghim

(1) PTN phi c th tc kim sot cht lng

cc php th nghim khng thc hin

thng xuyn v nu r cch thc m bo

kt qu th nghim nu mun c cng

nhn hoc duy tr cng nhn nhng phi m

bo tn sut thc hin kim sot t nht 4

ln/nm.

(2) PTN phi thc hin kim sot cht lng kt

qu th nghim thng xuyn vi tn sut

ty thuc vo phng php th, tn sut v

k thut th nghim nhng phi m bo t

nht 1 nm/ln cho tt c cc ch tiu c

cng nhn. H s thc hin vic kim sot

ny phi c lu y v sn sng trnh

by trong qu trnh nh gi.

(3) Cc d liu kim sot cht lng kt qu th

nghim cn c lu h s sao cho c th

nh gi xu hng ca cc kt qu v thc

hin bin php thch hp kp thi (v d:

biu kim sot cht lng/control chart).

(4) Chng trnh kim sot mc tin cy ca

kt qu th nghim phi bao gm cc ni

(3) Laboratory staff shall check condition of

sample when received. When sample

condition does not ensure or not enough

volume against method, this fact shall be

acknowledged on reports and client shall

confirmed by writing on the record.

(4) Except special case, laboratory shall keep

sample at least until get test results or longer

if any. Sample shall be kept in suitable

container and condition.

5.9. Assuring the quality of test results

(1) Laboratory wishing to maintain

accreditation for tests performed less

frequently shall have a documented

procedure to describe how they assure the

results generated by infrequently performed

tests and at least performed tests 4 times per

year. (2) Laboratory shall perform assuring the

quality of test results with suitable frequency

depend on method, perform test frequency

and technique to do the tests but at least

once per year for all accredited tests.

Quality control data shall be fully

documented and ready to show when

assessment.

(3) Quality control data shall be fully

documented in such a way that they are

readily accessible for evaluation of trends in

analysis, and these trends shall be monitored

with appropriate action being taken when

necessary (example: control chart).

(4) The program for monitoring the reliability

of test results shall include: natural and



dung: i tng th, hnh thc thc hin,

ngi thc hin, ngi nh gi kt qu.

PTN phi c cc tiu ch nh gi kt

qu.

(5) PTN la chn nh cung cp chng trnh th

nghim thnh tho/ so snh lin phng (PT)

v tham gia nh k theo qui nh trong th

tc th nghim thnh tho/so snh lin

phng APL 03.

(6) Nu PTN tham gia PT cho cc php th

c cng nhn m kt qu khng t th

phi thc hin hnh ng khc phc v np

bo co hnh ng khc phc, bng chng

ti BoA. Trng hp bo co hnh ng

khc phc ca PTN khng c BoA chp

nhn th BoA s tin hnh nh gi b sung

hoc tm thi nh ch cng nhn cho cc

php th

(7) PTN phi tham gia cc chng trnh th

nghim thnh tho/ so snh lin phng do

BoA t chc nu ph hp vi phm vi m

PTN c cng nhn.

Trng hp chng trnh th nghim thnh

tho/so snh lin phng nm ngoi phm vi

m PTN c cng nhn nhng nu ph

hp vi nng lc ca PTN th PTN c th

ng k tham gia . 5.10. Bo co kt qu (1) PTN c cng nhn phi s dng logo ca

BoA trong bo co kt qu th nghim thuc

phm vi c cng nhn. Vic s dng logo

ca BoA phi tun th qui nh v s dng

du ca BoA.

(2) Bin bn th nghim phi c xc nhn bi

nhng ngi c thm quyn k c BoA

tha nhn.

range of the tests, method, testing staff,

evaluate results staff. Laboratory shall have

criteria for accept or rejecting suspect

results.

(5) Laboratory shall selection PT provider and

participate regularly base on requirement of

APL 03 PT procedure of BoA.

(6) Laboratory shall take corrective action when

have outliers results for accredited tests after

participated PT program. The corrective

action report and evidence shall be sent to

BoA. BoA may conduct assessment

(follow up visit) or suspend accreditation

of that tests if does not accept the evidence

of corrective action.

(7) Accredited laboratories shall participate PT

programs concerning to accredited scope,

which program is organized and carried out

by BoA or BoA is contact point.

When PT program outside of laboratory

accredited scope but corresponding with

laboratory capability, laboratory could

register to participate.

5.10. Reporting the results

(1) Accredited laboratory shall use BoA

logo to reports for accredited tests.

Laboratory shall comply with Guidance for

use of accreditation logo and symbol of

BoA.

(2) Test report shall be examined by BoA

approved signatory.



(3) Trong bo co th nghim nu c cc php

th cha c cng nhn th PTN phi ch

thch vo bo co xc nh r php th

cha c cng nhn.

PTN c th ch thch: cc php th nh

du * l cc php th cha c cng nhn.

(4) Trong bo co th nghim nu c cc php

th ca mt PTN c cng nhn khc

(nh thu ph) th cn ch r ch tiu no

c thc hin bi nh thu ph, tn nh

thu ph.

(5) Nu kt qu th nghim nm phm vi gn

gii hn ph hp hay khng ph hp theo

qui nh k thut ca sn phm, i tng

th cn tnh khng m bo o v PTN

phi bo co khng m bo o cng kt

qu th nghim.

(3) Where results of tests not covered by the

scope of accreditation are included on test

reports, laboratory shall have notation which

tests are out of accredited scope.

Laboratory may notation: tests have

been defined by * are not including in

accredited scope.

(4) Tests report may have results of sub-

contractored work from an accredited

laboratory shall define the test results and

name of sub-contractor.

(5) If the results of a test fall into the range

where neither compliance nor non-

compliance can be proved, taking into

account the estimated uncertainty of the

measurement, then the result and its

associated measurement uncertainty shall be

reported. PHN 3 CHU K HIU CHUN, KIM PART 3 CALIBRATION AND CHECK



TRA THIT B THNG THNG

Ni dung phn 3 ny nu chi tit cc yu cu hiu

chun v kim tra thit b thng thng s dng

trong cc PTN lnh vc Ha.

Bng chu k hiu chun v kim tra thng thng

cho cc thit b lnh vc th nghim ha c nu

trong phn 3 ca ti liu ny. Cc chu k nu

trong bng l chu k ln nht cho mi thit b da

vo:

- Thit b cht lng tt, kh nng hot

ng n nh, c lp t v tr thch

hp v s dng hp l;

- Nhn vin am hiu, thnh tho thc

hin nhng kim tra thit b ni b;

- Tt c cc hot ng kim tra khng

nh thit b hot ng tt.

PTN phi rt ngn khong thi gian gia cc ln

hiu chun v/ hoc kim tra khi thit b hot ng

trong iu kin t l tng hn. Nu c bt k

nghi ng no v s h hng ca thit b th PTN

cn thc hin hiu chun li ngay lp tc v sau

gim chu k cho ti khi thy rng thit b t

c n nh.

Gim khong thi gian gia cc ln hiu chun

v/ hoc kim tra cng c th c yu cu trong

cc ng dng th nghim c th hoc vi cc cu

hnh thit b c th.

PTN c th ko di chu k hiu chun da trn

cc thng s nh theo di d liu hiu chun,

kim tra chng minh s n nh ca thit b,

tn sut s dng, chnh xc yu cu hoc PTN

c nhn vin nng lc tin hnh kim tra ni

b hoc tham gia t kt qu tt trong cc chng

trnh th nghim thnh tho.

PTN c th gim chi ph hiu chun bng cch

trin khai hot ng hiu chun ni b.

INTERVALS OF GENERAL EQUIPMENTS

The content of part 3 shows detailed requirements

for calibration and check intervals of general

instruments/equipments that used in chemical

testing laboratory.

The table includes the information on calibration

and check intervals for general equipment of

chemical testing laboratory was showed in part 3

of this document. The intervals are maximum

intervals for each ones and are based on:

- Good quality, stable operation ability,

installation at suitable location and

reasonableness utilization of equipments;

- Understanding and proficiency staffs to

check themselves equipments;

- All of checks were carried out to confirm

the good operation ability of equipments.

Shorter intervals between calibrations and/or

checks may be required when the equipment

operates under less than ideal conditions. If any

suspicion of damage arises, the equipment must be

recalibrated immediately and thereafter at reduced

intervals until it is shown that stability has not

been impaired.

Furthermore, reduced intervals between

calibrations and/or checks may also be required in

particular testing applications or with particular

equipment configurations.

Longer intervals between calibrations could be

based on parameters such as calibration and check

data to prove stability, frequency of use, accuracy

required of equipments or expertise ability of staff

to perform in-house checks or successful

participation in proficiency testing programs.

The laboratory can calibrate equipment

themselves in order to reduce of calibration fee.



Vic hiu chun thit b PTN v cc chng trnh

kim tra phi gm c:

- bn giao cc thit b mi (gm: hiu

chun ban u v kim tra sau khi lp

t);

- kim tra hot ng (kim tra trong khi s

dng vi cc chun chnh v cht chun);

- kim tra nh k (kim tra gia k nhng

tng i ton din, c th bao gm hiu

chun mt phn thit b)

- bo dng theo k hoch ni b hoc ca

nh cung cp c chuyn mn;

- ti hiu chun li ton b

Equipment calibration and checking program shall

cover:

- handover of new equipment (including

initial calibration and checks after

installation);

- operational checking (checking during

use with reference items or materials);

- periodic checking (interim but more

extensive checking, possibly including

partial calibration);

- scheduled maintenance by in-house or

specialist contractors;

- Complete recalibration.

CHU K HIU CHUN, KIM TRA THIT

B TH NGHIM THNG THNG Cc yu cu di y v chu k ti a PTN c th

la chn thc hin hiu chun v kim tra cc

thit b th nghim thng thng trong PTN. Cc

khong thi gian c a ra cho tng loi thit b

l khong thi gian ti a v ph thuc vo yu

cu v chnh xc v cch s dng cc thit b.

Thng thng vic hiu chun c thc hin bi

cc phng hiu chun c nng lc v theo qui nh

ca c quan cng nhn (BoA). PTN sau khi nhn

giy hiu chun s tin hnh nh gi thit b c

ph hp vi mc ch s dng ti PTN. Nu

phng th nghim mun t thc hin cc php

hiu chun thi phi chng minh rng phng c

nng lc thc hin cng vic ny theo nh quy

nh iu 5.6.2.1 ca ISO/IEC 17025.

Cc php kim tra thng c cc k thut vin

ca phng th nghim thc hin hoc cc n v

cung cp dch v cho PTN.

CALIBRATION AND CHECK INTERVALS

FOR GENERAL EQUIPMENTS

The requirements described below are maximum

intervals that laboratories can select for calibration

and check of general equipments. The intervals

are maximum intervals for each ones and are

based on accuracy and equipment use purpose.

Usually calibration has been conducted by

capabilities laboratory base on requirement of

BoA. Laboratory shall evaluate the calibration

results when received calibration certificate to

ensure the calibration results fitness purposes.

When laboratory would like to conduct calibration

themselves, they shall demonstrate that laboratory

have enough capabilities to perform conformity

with requirement of 5.6.2.1 of ISO/IEC 17025.

Checking equipment should be performing by

technician or services organization.



Thit b Chu k hiu chun (nm)

Chu k kim tra (thng)

Phng php v khuyn ngh

Equipment Calibration

period (year) Check period

(month) Method and recommendation

CN

BALANCES 3

(vi iu kin kim tra nh

k nghim ngt theo qui nh ct bn)

3

(shall conduct check period

as next column)

Hiu chun c thc hin bi phng hiu chun theo qui nh APL 02 BoA hoc PTN t hiu chun nhng phi p ng cc yu cu ca mt phng hiu chun theo ISO/IEC 17025 cho hot ng hiu chun cn.

Conducted by accredited laboratory against APL 02-BoA or inhouse calibrate if comformity with requirement of ISO/IEC 17025 for calibration.

Hng ngy

Daily Kim tra hng ngy c th bng mt trong cc cch:

- Kim tra lp li.

- Kim tra 1 im thng s dng. Daily check should choose one way as:

- Repeatability check

- One point check

1 Kim tra nh k cho 1 di o thng s dng

One range check

6 Kim tra nh k cc di o

All range check

1 Hng ngy

Daily Kim tra hng ngy c th bng mt trong cc cch:

- Kim tra lp li.

- Kim tra 1 im thng s dng. Daily check should choose one way as:

- Repeatability check

- One point check

3 Kim tra nh k cc di o

All range check

QU CN/ MASSES

Chun - Ton b bng thp khng g hoc hp kim Ni-Cr

Reference - of integral stainless steel or nickel chromium alloy

3

sau l /then

6

Hiu chun c thc hin bi phng hiu chun theo qui nh APL 02 BoA hoc PTN t hiu chun nhng phi p ng cc yu cu ca mt phng hiu chun theo ISO/IEC 17025 cho hot ng hiu chun cn

Conducted by accredited laboratory against APL 02-BoA or inhouse calibrate if comformity with requirement of ISO/IEC 17025 for calibration. Cng tc - thp khng g

hoc hp kim Ni-Cr

Working - stainless steel or nickel chromium alloy

3

Cng tc hp kim khc

Working - other alloy

1

DNG C THY TINH/ GLASSWARE









Pipet, buret, bnh nh mc

Pipetters, burettes, volumetric flasks

Ban u (tu thuc mc

ch s dng)

Initial ( subject to nature of

intended use)

12

Dng c thu tinh cp A cn c s dng khi th nghim yu cu mc chnh xc cao

Kim tra chm, ng mc dung tch thng dng bng cn phn tch thch hp

(kim tra i din cho tng l/chng loi)

Grade A glassware distillation receivers should be used where a high degree of accuracy is required.

Check precision and accuracy of volume delivered at settings in use by suitable balance

(check represent for batch/type)

Buret, pipet t ng dng pit tng

piston operated including: pipetter, dispensers, diluters, displacement burettes

Ban u (tu thuc mc

ch s dng)

Initial ( subject to nature of

intended use)

6

Dng c thu tinh cp A cn c s dng khi th nghim yu cu mc chnh xc cao

Kim tra chm, ng mc dung tch thng dng bng cn phn tch thch hp.

Grade A glassware distillation receivers should be used where a high degree of accuracy is required.

Check precision and accuracy of volume delivered at settings in use by suitable balance

(check represent for batch/type)

NHIT K/ THERMOMETERS

Chun u, in tr Platin

Refefence, platunum resistance

-400C n/to 2500C 5 6 Kim tra ti im bng

Check at ice point

2500C 2 trc khi s dng

Before use

Kim tra in tr ti im bng

Check resistance at ice point

Chun cng tc, in tr Platin

Refefence, platunum resistance

-400C n/to 2500C 5 6 Kim tra ti im bng

Check at ice point

2500C 2 6 Kim tra in tr ti im bng

Check resistance at ice point

Chun u, nhit k thy tinh

Reference, lidquid-in-glass (where kept as a reference)

10

trc khi s dng

Before use

Kim tra ti im bng

Check at ice point

Chun cng tc, nhit k thy tinh

Reference, lidquid-in-glass (where kept as a reference)

5

6 Kim tra ti im bng

Check at ice point or against a reference thermometer at 1 point in range.









Cu o nhit AC - chun u v cng tc

AC temperature bridge reference and working

5

Cu o nhit DC

Measurement instrument DC bridge type

1

(chun u/ reference)

2

(cng tc/ Working)

Chun u - H thng ch th nhit c hoc khng c u d nhit, dng cm tay, bn, t ghi, mt hoc nhiu knh

Hand-held, bench type and temperature loggers

1 6 Kim tra ti im bng

Check at ice point

Cng tc - H thng ch th nhit c hoc khng c u d nhit, dng cm tay, bn, t ghi, mt hoc nhiu knh

Hand-held, bench type and temperature loggers

2 6 Hiu chun phi thc hin 1 nm/ln nu khng c chun u

Calibrate every 12 months if the facility does not have a reference device

Kim tra so vi chun nhit s dng. Trng hp s dng nhiu hn 1 im nhit th chn im yu cu kht khe nht. Kim tra im bng nu khng c chun u (dng t ghi khng s dng mt nhit k t ghi khc cng loi khim tra)

Check against a reference device at the temperature of use. If used at more than one temperature, choose the most critical temperature. Check at ice point if the facility does not have a reference device. (For data loggers the reference device cannot be another data logger of the same type).

1 6

Hng ngoi

Infra - red

1 6 Kim tra ti im bng

Check at ice point

L NUNG

FURNACES

Ban u

Initial

3 Kim tra nhit vi u d nhit thch hp

Monitor temperature with appropriate sensor

12 Kim tra lp li, chnh lch nhit gia cc khu vc trong t

Check temperature variation within the working zone

T MI TRNG

ENVIRONMENTAL CONDITIONING CHAMBERS

3 Khi s dng

On use

IEC 60068-1,IEC 60068-2-38,IEC 60068-2-39

Kim tra ti im nhit s dng

Check at working temperature

THIT B CN KIM SOT NHIT / TEMPERATURE CONTROLLED ENCLOSURES









T lo ha

Ageing

5 Hng ngy

Daily

Kim sot nhit bng du d thch hp


T BOD

BOD

1 khi s dng

On use

Kim tra nhit lc bt u, nhit ti a v ti thiu ca t phi c kim sot trong qu trnh th nghim.

Check the temperature at the start of the test. The maximum and minimum temperature of the laden chamber must be monitored for the test period.

T sy

Drying

Ban u

Initial

khi s dng

On use

Kim sot nhit bng du d thch hp


12 Kim tra lp li, chnh lch nhit gia cc khu vc trong t

Check temperature variation within the working zone

T lnh

Refrigerators

Hng ngy

Daily

Khi nhit t lnh cn c kim sot th thc hin kim sot nhit qui nh bng nhit k (u d nhit hoc nhit k thy tinh)

Where critical, the temperature of the working space must be monitored by an appropriate temperature sensor throughout use.

T sy chn khng

Vaccum

12 Kim tra lp li, chnh lch nhit v p sut gia cc khu vc trong t

Check temperature variation and pressure in the working space.

CP NHIT IN/ PYROMETER

chun u

Reference

3 BS 1041 phn 5. Hiu chun bi c quan c thm quyn

Calibration by an approved testing authority

in t

electronic

1

cng tc

working

6 kim tra bng chun u

Check against reference pyrometer

NHT K/ VISCOMETERS

ng xi phng (ng hnh ch U)

U tube

Chun

Reference

ban u,

10

Initial

then 120

S dng nht chun

ASTM 2162

Against reference oils.

Cng tc

Working

ban u

2

Initial

then 24

S dng nht m bo cht lng so vi chun hoc s dng nht chun

ASTM 2162/D445; IP 71

Using quality oils against reference tubes or using









reference oils

Cc loi khc

Other

Brookfield ban u

Initial

S dng nht chun


24

1 S dng nht m bo cht lng (v d: ca nh sn xut)

Against quality (i.e. manufacturers) oils.

Ferranti ban u

Initial

S dng nht chun


3

Zahn ban u Initial S dng nht chun

Against reference oils. 12

T TRNG K / HYDROMETERS

Chun

Reference

5

Loi thy tinh - Cng tc

Working - glass

12 Kim tra so vi t trng k chun hoc chun b mi dung dch bit t trng ASTM-E126

Check against reference hydrometer or in newly prepared solutions of known density.

Loi kim loi - Cng tc

Working - metal

6 ISO 649.1,.2, ISO 650

Khi s dng

On use .

Kim tra trt ca thc

Check that scale has not slipped

THIT B T TRNG/

DENSITY METERS

Ban u

Khi nhit th nghim

thay i hoc sau khi lau

cell

Initial and

whenever test temperature

is changed or cell cleaned

ASTM D 4052 or ASTM D5002

Hng ngy

Daily

S dng vt liu tinh khit bit t trng v n nh

With pure substance of known density and stability

Hng tun

Weekly

Khng kh hoc nc ct 2 ln

Air and double-distilled water

M K/ HYGROMETER

m k Assmann & Sling

Assmann & Sling psychrometers

10

6 So snh vi cp nhit in ti nhit phng vi bc kh

Compare thermometers at room temperature with wick dry.









m k t ghi

Thermohygrographs

Hng tun

Weekly

Kim tra vi m k c hiu chun thch hp

Check against a calibrated psychrometer, if capacitance type

Nhit-m k loi in t

Electronic types

1 So vi m k chun

Check against a calibrated thermometer at ambient temperature.

KH P K/ BAROMETER

Fortin ban u

Initial then

60 Kim tra ti 1 im

One point check with transfer instrument.

Aneroid 1

P K/ MANOMETERS

Chun, chun cng tc (dung dch thu ngn)

Reference and Working,

liquid (Mercury based)

10 36 Kim tra sch ca du

Check the cleanliness of the fluid

Chun, chun cng tc (dung dch khc)

Reference and Working,

liquid (other than Mercury)

3 18 Kim tra sch ca du

Check the cleanliness of the fluid

in t

Electronic

1

THIT B O P SUT/ PRESSURE EQUIPMENT

Cc p k kim tra hiu chun p k cng nghip

Test gauges used for calibration of industrial gauses

1

Cc p k cng nghip khng ph thuc ti trng va p

Industrial gauges not subject to shock loading

1

Cc p k cng nghip ph thuc ti trng va p

Industrial gauges subject to shock loading

6 month

Cc b chuyn i p sut

Pressure transducers

1

Cc b hiu chun

Calibrators

1









MY LY TM

CENTRIFUGES

2 1 Trng hp khi s dng c yu cu k thut v tc

S dng my o tc kim tra

Tachometer (mechanical stroboscope or light cell type, or by other approved means) where operating speed is specified.

U THI KH

AIR FLOW NOZZLES

ban u

Initial

12 Kim tra ng knh ng

Check throat diameter.

THC CP/

CALLIPERS

2

THC DY, THC/ TAPE MEASURES, RULES

Thc dy

Tape measures

Ban u BS 4035

24 n/to 60 Kim tra chiu di ti a, ph thuc vo yu cu s dng v chnh xc

Check at maximum length, depending on use and accuracy required

Thc thp/Steel rules Ban u BS 4372

CC THIT B O IN/ ELECTRICAL INSTRUMENT

ng h vn nng ch th s

Digital multimeters

1 6 So snh vi cc ng h c di o thng thng

Calibrate over all ranges and parameters of use. Calibration must include linearity.

Compare with meters of similar resolution

ng h o vn nng dng Analog

Analog meters

2 6 So snh vi cc ng h c di o thng thng

Calibrate over all ranges and parameters of use. Calibration must include linearity.

Compare with meters of similar resolution

Data loggers 1 1 Kim tra im 0 v im cc i

Check at zero and the maximum point.

O LU LNG / FLOWMETERS

Lu lng k kiu phao (chun u)

Rotameters (Reference)

Tc cao > 1 L/pht

High flow > 1 L/min

Tc chm < 1 L/pht

Low flow < 1 L/min

24

ASTM D 3195

ng h lu lng kiu bng x phng

Soap bubble flow meter or any type of reference flowmeter

Lu lng k kiu phao (chun cng tc)

Rotameters (Working)

mi ln s dng

Each time on use

ng h lu lng kiu bng x phng

Soap bubble flow meter or any type of reference flowmeter

Lu lng k kiu ng

Orifice plates

ban u

Initial

BS 1042 phn 1 hiu chun bi c quan c thm quyn

Calibration by an approved testing authority.

6 Kim tra bng ngoi quan xem c b nt, mng i, bn

Visual inspection for damage, wear or contamination









ng h nc

Wet test meters

24 ASTM D 1071

ng h lu lng

Electronic soap film like

1 3 thng nu kt qu

trong phm vi 3 % v thi

hn c th n 6 thng

Monthly for 3 months then,

if measurements

are within 3% of

the expected result, the interval can be

lengthened to 6 months.

Theo dng h lu lng chun th cc di s dng

Against primary flow meter over the range of use (including high flow rates where used).

VI K

MICROMETERS

5

1 Kim tra im 0 v 1 im trong di o thng dng

Check zero and one point against gauge block. Inspect anvils.

MY O KHC X

REFRACTOMETERS

6

Kim tra bng bromonaphthalene hoc cht chun khc bit trc cc ch s khc x

Check against bromonaphthalene or other reference compound of known refractive index.

khi s dng

Each time on use

Kim tra bng nc ct

Check by distil water

SNG/ SIEVES Ban u

Initial

Compliance certificate to AS 1152, BS 410.

12 Ph thuc vo yu cu v chnh xc, tn sut kim tra t hay nhiu c th ph thuc vo cc b chun hoc cc vt liu chun ph hp.

Depending on the accuracy required, more or less frequent checks may be required against a reference set or a suitable reference material.

Khi s dng

Each time on use

Kim tra ngoi quan vt mi mn v lin kt

Visual check for wear and binding.

MY O IN TH/ POTENTIOMETERS

Chun u/ Reference 5 BS 1041 phn 5. Hiu chun bi c quan c thm quyn

Calibration by an approved testing authority

Chun cng tc/ working 12 kim tra bng chun u









NG H O THI GIAN

TIMING DEVICES

6 Kim tra so vi ng h truyn thi gian ca Vin o lng Vit Nam qua internet.

Test accurally against a speaking clock. Two measurements separated by an appropriate interval.

CC THIT B HA L: AAS, GC, HPLC, ICP

PHYSIOCHEMISTRY EQUIMENT: AAS, GC, HPLC, ICP

Ban u

Initial

Hiu chun ban u bng mu chun c chng nhn (Certified Reference Material - CRM) c th tham kho theo qui nh ca nh sn xut thit b, phng php th.

Calibration by Certified Reference Material CRM against test method or equipment manufacturer requirements

nh k (theo qui nh

phng php th, nh sn xut thit b)

periodic (against test

method, equipment

manufacturer)

Hiu chun bng mu chun (Reference Material - RM) c th tham kho theo qui nh ca nh sn xut thit b, phng php th.

Calibration by Reference Material RM against test method or equipment manufacturer requirements

Trc khi s dng (theo

qui nh phng php th, nh sn xut thit b)

Each time on use

(against test method,

equipment manufacturer)

Theo qui nh ca nh sn xut thit b v/hoc phng php th.

Against test method or equipment manufacturer requirements

nh k (theo qui nh

phng php th, nh sn xut thit b)

periodic (against test

method, equipment

manufacturer)

Bo tr/kim tra ton b h thng theo qui nh ca nh sn xut.

Maintenance system/ check system against manufacturer requirements

PH LC: HNG DN HIU CHUN

MT S THIT B

Cc hng mc c th ca mt s thit b c kit

k di y cng vi hng dn hiu chun

ANNEX: GUIDE TO CALIBRATION OF

EQUIPMENT

Some specific equipment below with guide to in-

house calibration, maintenance.



ni b, vn hnh v bo dng. NHIT LNG K

Xc nh ng lng nc bng axt benzoic

theo chu k 6 thng. THIT B O DN

o dn ti mt im kim tra ang s dng v

kim tra ton b thang chia mi nm. Theo ASTM

D 1125 hoc theo hng dn s dng ca nh sn

xut. THIT B O LNG OXI HA TAN

o dn ti im 0 v mt im ang s dng

bng mt trong cc phng php sau:

- Kim tra vi nc bo ho

- Kim tra vi nc bo ha xi

- Kim tra vi chun Winkler

Kim tra im 0 c th thc hin bng cch o

DO ca dung dch chun b sn bng cch cn 1g

sunphit natri v mt cht tinh th clorit coban

trong 1 lt nc. Thc hin o hiu chun s

c DO v phi m bo khng ln hn 0,2 mg/L.

THIT B O pH

Kim tra trc mi ln o dng t nht 2 dung

dch m chun ng vi pH tng ng vi khong

pH ca mu th nghim. 6 thng 1 ln kim tra

3 m chun. H s th hin vic kim tra cn

c lu. Tham kho ti liu APHA 4500-H v

BS 1647. in cc cng phi c kim tra t nht

l hng tun, hoc tn sut ln hn. Tham kho

theo hng dn s dng ca nh sn xut.

THIT B O C

o dn ti mt im tng ng vi c ca

mu th, v hiu chun y mi nm. Theo

APHA 2130B. (cht chun c th mua hoc PTN

CALORIMETERS

Determine water equivalents using certified

benzoic acid at six monthly intervals. CONDUCTIVITY METERS

Conduct a one-point check on use and check the

complete scale each year. Reference to ASTM

D1125 or manufacturer guidelines.

DISSOLVED OXYGEN METERS

On use, conduct a zero check and a one-point

check by one of the following check procedures:

- Check against water saturated air;

- Check against oxygen saturated water

- Check against the value obtained by the Winkler titration.

A zero check can be carried out by measuring the

dissolved oxygen (DO) for a prepared solution

containing 1g sodium sulfite and a few crystals of

cobalt chloride in 1 L of water. If the meter is

properly calibrated the DO reading should be less

than 0,2 mg/L. pH METERS

Calibrate the pH before using at least two buffer

solutions suitable with measure range. One per

six months using three buffer solutions. Records

must be kept of all calibrations and checks,

including the temperature of all buffer and sample

solutions measured. Method 4500-H+; BS 1647,

and references therein. The electrode system

should be check weekly or more. References to

recommended by the instrument manufacturer. TURBIDIMETERS

Conduct a one-point check appropriate to the

anticipated turbidity of the sample being

measured, and a complete calibration each year.



t to. Kim tra li cht chun ca nh cung cp

hng nm bng chun formazin).

THIT B PHN TCH T NG

Ton b h thng cn c kim tra/hiu chun

(tham kho hng dn ca nh sn xut) mi ln

s dng v km theo vic kim sot cht lng

bng cht chun, hiu chun ng nn v mu

trng. Cn c k hoch lm mu lp v kim tra

thu hi bng mu thm. Trong trng hp phn

tch mt chui mu, phi p dng bin php thch

hp bo m thit b vn hnh tt trong sut thi

gian phn tch mu.

Th tc kim sot cht lng cn kim tra c

tnh hiu qu ca bt k phn ng trong qu trnh

th nghim v d ct kh cadmium s dng cho

phn tch nitrate.

Ni chung cc thit b phi c bo tr theo qui

nh ca nh sn xut. Nu c yu cu kim sot

nhit (v d b iu nhit) phi c theo di

bng thit b hiu chun (nhit k hoc cp

nhit in cng tc). Cc b phn ca thit b cn

c kim tra nh k v ch ra cch kim sot

cht lng khi c vn khng ph hp.

THIT B O PH

a s cc php phn tch nh lng trong phng

th nghim ha c s dng thit b o quang ph

hoc so mu. Do phng th nghim cn thc

hin thng xuyn v ghi nhn h s v kim tra

v hiu chun cho cc thit b quang ph t ng

hoc so mu. ng cong hiu chun c th s

dng trong mt khong thi gian nhng phi c

kim sot bng mu trng v mu chun cho mi

ln th nghim v phi c thit lp li mt

thng mt ln.

Refer APHA 2130B. (Reference standards may be

purchased or made up in the laboratory. Check

manufacturer supplied standards annually against

formazin standards.) AUTOANALYSERS

The total system must be checked/ calibrated on

use (ref recommended by the instrument

manufacturer) and monitored during each run with

quality control measures such as reference

materials, calibration/drift checks and blanks. The

scheduled use of duplicates and recovery checks

by spiked samples is also recommended when a

bath of sample being measured to ensure status of

equipment.

Quality control procedures need to verify the

efficiency of any chemical reactions which are

part of the method (eg. cadmium reduction

column used for nitrate analysis).

In general the equipment must be maintained in

accordance with manufacturers specifications.

Temperature controlled enclosures (such as water

baths) must be monitored with calibrated

equipment (working thermometers or

thermocouples). Individual components should be

checked routinely and whenever quality control

measures indicate a problem. SPECTROPHOTOMETERS

A great number of the quantitative analyses

performed in a chemical testing facility involve

some form of spectrophotometric or colorimetric

measurement. It is essential that a facility carry

out regular, recorded calibration checks on all

spectrophotometers or automated devices

employing spectrophotometers or colorimeters.

The calibration curve may be use for a period time

but shall be use blank and QC samples for each

measured. A new calibration curve must be

prepared at least every month.



Thit b phi c kim tra/hiu chun nh k v

phi bao gm c vic kim tra s chnh xc ca

bc sng, hp th, tnh tuyn tnh, lp li,

phn gii, nh sng phn tn, tnh trng n v

ph hp t bo quang in. Vic kim tra/hiu

chun phi thc hin ph hp vi hng dn ca

nh sn xut v/hoc cc s liu, ti liu lit k

trong khong ph hp vi cc th tc th nghim

v iu kin mi trng s dng thit b (nhng t

nht ba thng mt ln).

Tt c thit b phi c kim tra bng cc cht

chun ph hp. Mu trng v t nht 2 im trn

ng cong hiu chun cng phi c kim tra.

Vic hiu chun ny phi gip theo di c tnh

trng ca h thng thit b qua cc ln kim tra

pht hin bt k s khc bit no ca h thng.

Mt s phng php phn tch s dng cc thit b

di y c cp cch kim tra v s dng thit

b gm c: a) T ngoi/ kh kin: ASTM E131 Thut ng lin quan n php ghi

quang ph phn t. ASTM E169 Thc hnh k thut chung v

phn tch nh lng bng quang ph t ngoi

ASTM E275 Thc hnh m t v o bng

quang ph k t ngoi, kh kin v hng ngoi gn

ASTM E925 Thc hnh hiu chun theo nh

k quang ph k c di ph di hp khng ln hn 2nm.

ASTM E958 Thc hnh o di rng quang ph

ca quang ph k t ngoi - kh kin.

b) Hng ngoi:

Equipment shall be checked/calibrated frequency

and shall include checks on wavelength accuracy,

absorbance, linearity, stray light and matching of

cells. These checks/calibrations must be carried

out in accordance with the manufacturers

instructions and/or the codes of practice listed

below at intervals appropriate to the test

procedures and the physical environment within

which the instrumentation is used (but at least

every three months).

All instruments must be checked on use against

appropriate reference materials. A blank and at

least two points on the calibration curve must also

be checked. These calibrations should be

compared over time to detect any system

deterioration.

Relevant standards for the checking and use of

spectrophotometers include:

a) Ultraviolet/ Visible: ASTM E131 Standard terminology relating to molecular spectroscopy. ASTM E169 Standard practices for general techniques of ultraviolet-visible quantitative analysis. ASTM E275 Standard practices for describing and measuring performance of ultraviolet and visible spectrophotometers. ASTM E925 Standard practice for monitoring the calibration of ultraviolet - visible spectrophotometers whose spectral slit width does not exceed 2nm. ASTM E958 Standard practice for measuring practical spectral band-width of ultraviolet-visible spectrophotometers. b) Infrated:



ASTM E168 Thc hnh k thut chung v

phn tch nh lng bng quang ph hng ngoi

ASTM E932 Thc hnh m t v o bng

quang ph k hng ngoi tn x. THIT B QUANG PH

c tnh thit b phi c kim sot khi s dng

bng cc cht chun. th hiu chun phi c

chun b s dng mu trng v bng t nht t 03

n 05 dung dch chun bao ph c khong

nng c th c trong mu phn tch.

Kim tra ng tuyn tnh phi c thc hin;

tuy nhin c hm tuyn tnh cn chun b 1

im trng v 5 im nng ng dung dch chun.

i vi hp th nguyn t, ng tuyn tnh phi

c dng da vo da trn tn hiu o ( hp

th). Cc b phn ca thit b v thit b ph tr

phi c bo dng v kim tra nh k theo cc

th tc c vn bn ha m bo c tnh

thit b quang hc. (iu ny c th thc hin bi

cc k thut vin bn ngoi). Cc tiu chun lin

quan kim tra v s dng quang ph k bao

gm: a) Hp th nguyn t:

ASTM E 1184 Thc hnh phn tch hp th nguyn t l graphit.

APHA 3111 Phn tch kim loi bng quang

ph hp th nguyn t ngn la. APHA 3112 Phn tch kim loi bng quang

ph hp th nguyn t bay hi lnh.

APHA 3113 Phn tch kim loi bng quang

ph hp th nguyn t nhit in. APHA 3114 Phn tch asen v selen bng

ASTM E168 Standard practices for general techniques of infrared quantitative analysis. ASTM E932 Standard practice for describing and measuring performance of dispersive infrared spectrophotometers. SPECTROMETERS Instrument performance must be routinely

monitored during use with reference materials.

Calibration graphs must be prepared using a blank

and three to five solutions of standards covering

the expected concentration range of analyte in the

sample.

This may be adequate for a linear graph; however,

for a polynomial fit the graph should be prepared

with a blank plus five to six solutions of standards.

For atomic absorption, linearity checks must be

done in the absorbance mode. Spectrometer

components and supporting equipment must also

be adequately maintained and checked

periodically in accordance with documented

procedures to ensure optimal instrument

performance. (This may need to be done by

external technicians.) Relevant standards for the

checking and use of spectrometers include: a) Atomic absorption: ASTM E1184 Standard practice for electrothermal (graphite furnace) atomic absorption analysis. APHA 3111 Metals by flame atomic absorption spectrometry. APHA 3112 Metals by cold-vapour atomic absorption spectrometry. APHA 3113 Metals by electrothermal atomic absorption spectrometry. APHA 3114 Arsenic and selenium by hydride



quang ph hp th nguyn t / pht sinh hyrua.

b) Pht x nguyn t v hunh quang tia X: AS 2563 Bc sng phn tn quang ph

hunh quang tia X Xc nh chm.

AS 2883 Phn tch kim loi phng php

thit lp, hiu chun v chun ha pht x nguyn t s dng h quang/tia la in.

ASTM E135 Thut ng lin quan n ha phn

tch kim loi, qung v vt liu lin quan.

c) Plasma lin hp cm ng: APHA 3120 Phn tch kim loi bng quang

ph pht x plasma d) Cng hng t ht nhn: ASTM E386 Thc hnh trnh by d liu lin

quan n quang ph cng hng t ht nhn phn gii cao.

SC K a) Sc k kh Cc thng s c trng ca thit b phi c

kim tra/hiu chun nh k bng cc cht chun.

Cc thnh phn ca h thng (my tch phn, nhit

l ct, chng trnh nhit , tc dng kh,

detector) cng phi c kim tra theo chu k, v

cc h s kim tra phi c lu gi. b) Sc k lng, bao gm sc k lng hiu

nng cao (HPLC) v sc k ion

Ton b h thng phi c kim tra/hiu chun

bng cc chun chnh. S gim kh nng pht hin

c th c pht hin bng vic so snh cc kt

qu theo thi gian khi th bng cht chun. Cc

thnh phn ca h thng phi c kim tra nh

generation/atomic absorption spectrometry. b) Atomic emission and x-ray fluorescence: AS 2563 Wavelength dispersive X-ray fluorescence spectrometers - Determination of precision. AS 2883 Analysis of metals - Procedures for the setting up, calibration and standardization of atomic emission spectrometers using arc/spark discharge. ASTM E135 Standard terminology relating to

analytical chemistry for metals, ores and related materials.

c) Inductively coupled plasma (ICP): APHA 3120 Metals by plasma emission spectroscopy.

d) Inductively coupled plasma: ASTM E386 Standard practice for data presentation relating to high resolution NMR spectroscopy. CHROMATOGRAPHS a) Gas chromatographs (GC) Instrument performance must be routinely

monitored during use with reference materials.

System components (eg. integrators, ovens,

electronic amplifiers and detectors) must also be

checked periodically, and records kept.

b) Liquid chromatography including high performance (or high pressure) liquid chromatographs (HPLC) and ion chromatography: The total system must be monitored during use

with reference standards. Loss of efficiency may

be detected by chronological comparison of

reference material measurements. System



k v ni dng c lu gi h s kim tra.

Cc tiu chun lin quan n vic kim tra v s

dng thit b sc k gm: ASTM D1945 Cc Phng php phn tch kh

t nhin bng sc k kh. ASTM D4626 Thc hnh tnh ton cc h s

p ng trong sc k kh. ASTM E260 Thc hnh sc k kh ct nhi. ASTM E355 Thc hnh cc hng mc ca sc

k kh v nhng vn lin quan. ASTM E516 Thc hnh kim tra detector dn

nhit dng trong sc k kh. ASTM E594 Thc hnh kim tra detector ion

ha ngn la dng trong sc k kh.

ASTM E682 Thc hnh cc hng mc ca sc

k lng v nhng vn lin quan.

ASTM E685 Thc hnh th nghim detector

UV/VIS bc sng c nh dng trong sc k lng.

ASTM E697 Thc hnh s dng cng kt in

t ECD trong sc k kh. ASTM E840 Thc hnh s dng detector trc

quang ngn la FPD trong sc k kh.

ASTM E1151 Thc hnh cc loi sc k ion v

nhng vn lin quan. ISO 10301 Cht lng nc - Xc nh cc

hyrocacbon halogen d bay hi

components (eg. pumping system and detectors)

must be subject to periodic checks and details

must be recorded.

Relevant standards for the checking and use of

chromatographic instrumentation include: ASTM D1945 Test methods for analysis of natural gas by gas chromatography. ASTM D4626 Standard practice for calculation of GC response factors. ASTM E260 Standard practice for packed column gas chromatography. ASTM E355 Standard practice for gas chromatography terms and relationships. ASTM E516 Standard practice for testing thermal conductivity detectors used in gas chromatography. ASTM E594 Standard practice for testing flame ionization detectors used in gas or supercritical fluid chromatography. ASTM E682 Standard practice for liquid chromatography terms and relationships. ASTM E685 Practice for testing fixed- wavelength photometric detectors used in liquid chromatography. ASTM E697 Standard practice for use of electron-capture detectors in gas chromatography. ASTM E840 Standard practice for using flame photometric detectors in gas chromatography. ASTM E1151 Standard practice for ion chromatography terms and relationships.



bng sc k kh. BS 5443 Khuyn co v mt s tiu

chun cho cc phng php phn tch ha hc bng sc k kh.

Phn tch kch thc ht: c tnh thit b phi c kim sot nh k khi s dng vi cc cht chun. ASTM F660 Thc hnh so

agl 03. yeu cau bo sung linh vuc hoa 2012

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