0 T H E W A T E R Q U A L I T Y

WATER REGULATTONS ADV|SORY SCHEME (WRAS).

TESTING OF NON.METALLIC MATERIALS FOR USE WITH DRINKINGWATER (BS 6920 : 2000)

TEST REPORT

Product : BK Standard LubricantReport Reference : M 105052

Page 1 of8 Pages.

Thomas Grozier and Son Pty Ltd2/8 Prince William Drive

Seven Hil lsNSW 2147

AUSTRALIA

Report Date : 12th September 2011

Executive Summary - this product has met the requirements of the Water RegulationsAdvisory Scheme (WRAS) Tests of Effect on Water Quality/Bs 6920:20001 Cold Water Use.

NOTES.1. The results given in this report relate only to the items tested, and not necessarity to'the bulk from which they were takeih.2. This test work was undertaken in the UKAS accredited Spencer House laboratory of Thames Water Utilities Ltd., UKASregistration number 0677, unless othen /ise stated.3. Opinions and interpretationb expTes3ed herein are outside the scope of UKAS accreditation.4. This test report shall not be reproduced, except in full, without our prior wr:itten approval.

| (Mater ia ls Test ing)C E N T R E I

Spencer House LaboratoryManor Farm RoadReading

Berks RG2 OJNTel + 44 (ql 1e 923 6214 / 6219Fax + 44 (O)1 18 923 6373

E-mai I wqc@matori a I stestl ng.co. uktlwbe lte www. materia Istesti ng. co. u k

The Watat Qualw Cente is part ot Thames Watet Uilities LimitedRagistored in England and Wales No 2366661

Registercd Olfice Clearwater Couft Vastern Road neading RGl 8DB

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Report Reference M- page2 o fg-

TESTING OF NON-METALLIC MATERIALS FOR USE WITH DRINKING WATER.WATER REGULATIONS ADVISORY SCHEME TESTS OF EFFECT ON WATERQUALITY (BS 6920:2000).

O. INTRODUCTION.The samples of the product referred to in this report have been tested in accordance with themethods of the Water Regulations Advisory Scheme (WRAS) Tests of Effect on WaterQuality/Bs 6920-2:2000 "Suitability of non-metallic products for use in contact with water intended forhuman consumption with regard to their effect on the quality of the water : Methods of Test".

1. TEST SAMPLES.

1 05052Pages

General composition of product

Trade name/desig nation

Material manufacturer

Lubricant :' ' ' ' ' ' : : ' ' ' ' ' ' : ' 'BK Stanaaio :uubricint'

Thomas Grozier and Son Pty Ltd

Date of manufacture/production

Production batch numbers

Su bmitting organisation

Date of receipt of test samples

14th Janu ary 2011

01140111

Thomas Grozier and Son Pty Ltd

18th July 2011

Method of packaging

Condit ion on receipt

Laboratory storage before test

In product container , r

Satisfactory

Am bient temperature (21 t4 O C

Description test article 59 of lubricant was spread onone side of a sanded glasspanel.

Appearance of article colour Clearsurface finish Smooth

opacitv Transparent

Surface area of one article (mm')

Number of articles to give a surface area to volume ratio of15000mm' to 1L of test water

N/A

1

Calibration mark of the test'vessel/container in litres

Extraction temperature used for tests 2, 3, 5 & o

1

(23t2)"C

Report Reference M 105052Page3 o f8 Pages

Date test started : 30.08.11.

0 -

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- 2. oDouR & FLAVoUR oF wATER TEsr.Temperature of extraction : (23t2)"C

The extracts detailed below were compared with the procedural blank test waters by a panel of 3testers. The following results were obtained for the test extracts.

Extract Test water Test Descriptors Thresholddilutions

FirstGh|orln:b. ,..,i'.ffgei r':. ..., ...u*ti*t..

nl$ffiur:

Flavour .N.O,n.e <1

FinalChlorine

freeOdour

Flavour

Flavour

[method code LPiR/MTO2] ,

COMMENT. On the basis of these results the samples of this product have been found to conformwith the requirements of BS 6920-1 : Clause 4 when extracted at 23"C.

,. 1

3. APPEARANCE OF WATER.Temperature of extraction : (23t2\"C Date test started : 09.08.11.

Colour(Hazen Units)

First Extract Final Extract

Turbidity(Formazine Nephelometric Units)

Ffrst Extract Final Extract

Tsstir isam pl6 ., oxtract

t blank

<0t8

<0.9

:ri:$0ti.

<0.07

Iest sample effect <0.9 s0.07[method code LP/R/MTO3 & LP/R/526 & LP/R/14 & LP/R/15]

COMMENT. On the basis of these results the sample of this product has been found to conform withthe requirements of.BS 89?0-1 : Clause 5 when extracted at 23"C.

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4. GROWTH OF AQUATIC MICROORGANISMS.Temperature of test : (30t2)"C

Report Reference M 105052Page4o f8Pages

Date test started : 19.07.11.

Container Mean Dissolved OxygenDifference (MDOD) in

0.0

7.6f i

tPositive reference (wax)

(weeks 5 to 7)

Special positive referenceB a cterioci d a llB acte ri ostati c effect i s detected

7.8No

Negative control - Mean dissolved oxygen concentration(weeks 5 to 7)

[mehod code LP/R/MTO4!

q9MMENT. On the basis of these results the sample of this product has been found to conbrm withi '

,

At the end of this test the test pieces showed no changes in colour and appearance.

8.2

0o\

- s. THE ExrRActoN

Report Reference M 105052Page5 of8 Pages

OF SUBSTANCES THAT MAY BE OF CONCERN TO PUBLIC

Date tqt started : 09.08.11.

The extracts from the product and the blank were used to prepare culture media for use with amonkey kidney cell line (VERO ATCC CCL 81)

HEALTH.Temperature of extraction : (23t2)"C

Cell morphology(Microscopy)

Culture medium(cofeu0

' ,Monolayer confluence

(approx %)

Satisfactory

Normal

100o/o

Cell death

Abnormal (alkaline)

0o/o

[method code LP/FUMT0S & LP/R1256]

COMMENT. On the basis of these test results the extract of this product has been found to give anon-cytotoxic response, and therefore it has been found to conform with the requirements ofBS 6920-1 : Clause 7 when extracted at 23"C.

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6. EXTRActoN oF METAL'.Temperature of extraction : (23t2)"C

Report Reference M 105052Page6 of8 Pages

Date test started : 09.08.11.

The results obtained for the first extract are given below -

Element Unit MACReporting

limitReagent

blank

Alumin ium Al pg/L 200 6.3 <6,3 <6.3

Antimony Sb pg/L 0.5 li'$ft5 €0iS <0.5

Arsenic As

Barium Ba

Cadmium cd us/L

g

J.2

II0

10

000

5

1

(0"3

<0;7

0i2

<0.3

<0.7

<0.2

Chromium Cr pg/L 50 1 .2 ti.trU 41'r2 < 1 . 2

Pb 0.3 <0.3

Mn 0.7 <0.7

0 .12 <0.12

Nickel 1 .6 <il,,6 ' < 1 . 6

Selenium Se pg/L 0.8 <0.8

[* method code LP/R/MT06 & LP/Ry563]

Extract Analytical.

Aluminium, antimony, arsenic, barium, cadmium, chromium, iron, lead, manganese, mercury, nickel,and selenium - inductively coupled plasma mass spectrometry* or inductively coupled plasma opticalem ission spectrometry*.

Analyticat Controt Data - this technique is in continuous use for analysis of drinking water metals; thistechnique is fully validated to the requirements of "A Manual on Analytical Quality Control for theWater Industry" (NS 30) and the requirements laid down by the Drinking Water Inspectorate. Thetechnique has a comprehensive AQC protocol including control solutions and spike recovery testingwith each batch of samples for analysis; full details available upon request.

COMMENT. On the basis of these results the sainples of this product have been found to canformwith the requirements of BS 6920-1 : Clause I when extracted at 23"C.

20

10

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Report Reference M 105052PageT of 8 Pages

The samples of this product meet the test criteria of BS 6920-1:2000("Specification") and thus DO conform with the requirements of the WaterRegulations Advisory Scheme (WRAS) Tests of Effect on Water Quality, and issuitable for use with cold but not hot water.

NOTE : materials and products intended for use by a public water supply company in the preparation or conveyance of watermay need to satisfy more comprehensive toxicological requirements as specified by the Drinking Water lnspettorate. Theseadditional requirements are necessary to ensure water company usage complies with Regulation 31 of the Water Supply(Water Quality) Regulations 2000.

NOIES.1. The results specified in this report relate only to the sample(s) submitted for testing. Any changes in the nature or source ofingredients and the process of manufacture or application could affect the suitability of this product for use in contact withdrinking water.2. We would draw to your attention that reports issued by the accredited test laboratories do not of themselves constituteapproval by the Water Regulations Advisory Scheme (WRAS) or the test laboratory. Only a letter from the Scheme, citing aDirectory Reference Number, can be regarded as indicating approval.

Note for the Water Regulations Advisory Scheme (WRAS) : Testing was carried out using a pretest 60 minute rinse in tap water, at a flow rate of 1 litre per minute, in accordance with the pioductdata sheet.

trty-Jn//

Anthony MaddoxMaterials Testing Analytical Consultant

ATER REGULATIONS ADVISORY SCHEME

Report Reference M 105052Page8 o f8 Pages

(WRAS) TESTS OF EFFECT ON WATERUALITY : TEST CRITERIA (BS 6920:2000).

The following test criteria are used to determine whether your product(s) complies with the requirements of the WaterRegulations Advisory Scheme (WRAS) Tests of Effect on water euality.

L ODOUR & FLAVOUR OF WATER. (BS 6920-t : Ctause 4)Off'odours and ofi-flavours ofwater are the most usualcauses ofcustomercomplainb aboutwaterquality. On test the materialis exposod, under controlled conditions (surfac€ area to volume (SA/) test ratio, duration, temperaiure) to the test watsr (withand without freechlorine); it is subsequently diluted tnice on a 1 to 1 basis and assessed by'a test pinel.

The test sample leachatos must be frse from odour and, afrer dilution, free from flavour in ths first 1 :.1 dilutions of them. lf, after7 sequential loaching poriods, anyodouris detected inthesample leachates or any flavour detected in the first ditution oftheseleachates by any of the three panellists, then the productfails to meet this test critilrion unless two further ssts of test samDlesare assess€d and no odour is reportsd in the leachates and no flavour is reportod in thefirst dilutions ofthe final(i.e. seventh)leachates from these additional test samDles.Mabrials meeting theee fc,st crt/rlrla do not usuatty glve rlse to off-odours and olf-flayours ln-servlce.

2. APPEARANCE OF WATER (BS 6920-1 : Ctause 5)Any incrsase in tho colour and turbidity of_ths tinal (i.e. seventh) leachate from the samplo of tho poduct must be less than5 Hazon units.and 0.5 FNU respectively. .lf any colour or turbidity is detectod in thefinal dxtraa, then the productfails to meetthe test criteria unress two furthsr samples are tested and the-mean of the colout and turbidity meastirements of the finalextracts of a/, of the samoles meet the tost criteria.MabdalE meefing these ,esf crtigtta do no, usually glve ds6 to ln-aeMce changes in the appeannct ol wabr.

3. GROWTH OF AQUATIG lllcR@RcANtSMS. (BS 6920-1 : Ctause 6)The original methods were based on microbiologidl counting techniquei and the test took a longsr time oeriod and costconsiderably more (in real terms) than_ th€. present tsst. In a! €tlempt to improve tho perbrmarice of th; tsst, includingduration, other tschniques were evaluated for assesslng materlals for the supports of bioiihs and overalt growth in water.work using.dissolved orygen dopletion measrrements ai a sunogate measuie of microbial growth in water ihowed impovedreploducibility.and repqatabilitycompared with bacterialcounts. The mean dissolved o4pen d-ifference (MDOD)valueobtainsdfor the product is a sunogate measure of its ability to.. support ttre growm 6f miimoryaniyns - as the g'rowttt oi ttre organismiincreases orygsn is removed from the test system; thus the greater the loss of dissolved orygen caJsed by the proJuct, thegraaterthe MDoD value. Thisworkwas subsequently published (colboumo and Brown, 1979land incorporiteo ino aS 6920: Section 2.4:1988.

The mean dissolved oxygen diffsronce between the !,vater in contact with ths sample of the product and the negative controlsystom must be-less than 2.4 mg/l; two furlher test samples of producls giving a vilue in the'range 1.7 to 2.9 m!/L are testeaand the m9_an- of the three readings used to show conformity uiittr ttre teit re{uircment s(<2.4 mifl).The pass/hll crlterlon r,yas set arter consrde n/1/on of r6sul6 obhlned from ma6l4"6 ujtig mtcroblal counb andevaluation of mabrlars assocraied rryr'fh b lofilm davetopmentandlor mtcrob'€l detelonqon iniyyats,r qut gt tn-sarylc,-.

4. THE EXTRACTION OF SUBSTANCES.... (CYTOTOX|C|TY TEST) (BS 6920_t : Ctause 7)lf the tirst aqueous axtract from the sample of ths product is ftee fom t6xii;ity to the test co line,it can be rsgarded as suitablofor use in contact with potable water in relation to this pafiicular test. lf any io)dcity is OetecreOiir ttris extra-d, tiren ttre produafails to meet ths tsst criteria unress two further samples are testsd and found b Le tree tom any toirc [sgionse.A hllurc in thls hst ls hidicatlve only of a posslbte pubtlc health lssae and NOf neea1ssa'itty oi a ii conem.

5. THE EXTRACTION OF METALS. (BS 6920-j : Ctause B)fny metial present in_the-finalduplicato oxtracts obtained fromthe samples of tlie product must bs at levels less than MaimumAdmissible l-evels (MAcs) based on both the.lirst and subsequent EiJ Drinking'Water Directiues. rt t|' i uncs ot any metalis exceeded in either of th€.final.exk?ctrs from the samplos ofth! proouctthen ttr6 prcductfails to meet this test criterion unlessnree runner sampEs of the product are tested and the levels of the spocmed metals in the sxtracts from all of thess additionalsamples do not exceed the MAC8.Met€ als meeang these Ed crl'F,rta do not usuatly gtye fise b stgniflcant ln-seryt@ changes ln the concentrauonsof metals In water,

copyright @ Thames water util it ies Limited (The water ouality centre)2ooo r