Product Specifications

The Thermo Scientific Slide-On ATR objectiveprovides an efficient way to collect spectrafrom a sample surface without time-consumingpreparation, making it a perfect choice for theroutine analysis of a wide range of samples.The dovetail mounted crystals easily slide onand off in seconds, retaining full transmissionand reflection capabilities on a single objective, while adding the versatility ofATR analysis.

Collecting spectra is as easy as placingthe sample upon the stage and bringing it incontact with the crystal. The unique propertiesof the hemispherical crystals limit the depthof penetration into the sample surfaceavoiding saturation of the spectral bands.The conical tip design provides exceptionalsensitivity and higher depth of penetration.This allows the analyst to make quick workof identifying trace evidence, defects orinclusions, even inside depressions. Crystals

for this objective are pre-aligned in slide-onmounts that offer sampling reproducibilitynot found in “pogo stick” or complicatedspring loaded designs. The durable crystaldesign and the precise mounting systemallow ATR map-surveys on many non-abrasivesurfaces. This unique capability allowsspectral previewing when moving the samplein contact mode. Users can identify themost significant sample spot or area in seconds. The Slide-On ATR™ allows the mostconvenient cleaning and crystal inspection toavoid cross-contamination without rotatingthe objective nosepiece or lowering thestage to get access to the crystal. TheSlide-On objective provides transmission,reflection and ATR infrared collection modesas a convenient, unique combination. It alsoprovides the best optical image, due to theinfinity-corrected design.

Thermo Scientific Slide-OnATR Microscope ObjectiveCost-effective, high performance approachto non-destructive surface analysis ofmicroscopic samples

The Thermo Scientific Slide-On is a microscope objective thateffectively performs analysis ofinclusions, surfaces and residualsinside depressions combininguncompromised transmission,reflection and micro ATR samplingcapabilities.

Part of Thermo Fisher Scientific

m o l e c u l a r s p e c t r o s c o p y

The Slide-On ATR Objective provides the fol-lowing benefits:• Sample position reproducibility• Easy cleaning to avoid cross-contamination• ATR survey mode• Cost effective, replaceable crystals• Uncompromised transmission, reflection

and ATR in a single objective• Infinity corrected optical design• Proprietary spherical aberration

compensation

Applications• Surface analysis/depth profiling• Coatings on non-reflecting substrates• Inclusions in resins, polymers and rubber

materials• Art & historical artifacts• Microelectronics• Forensics• Defect analysis• Residuals inside depressions

Crystal OfferingsThe unique design allows simple in situexchange of crystals with different materi-als available for specific sample types.

Germanium HemisphericalA hard material with a shallow depth ofpenetration that is excellent for use withthin layers or carbon-filled materials thatcannot be analyzed with other crystal types.Good choice for ATR surveys.

Silicon Hemispherical A harder material with a deeper depth of penetration than Ge. Excellent for rigidmaterials and powders that may damagesofter crystals. Best choice for ATR surveys.

Tip Crystal A Ge conical shaped crystal with a largedepth of penetration designed to measuresamples inside depressions or betweenobstacles (i.e. assembled electronic boards).Good choice for ATR surveys.

The Slide-On ATR objective comes standard with a sensor plate designed for theintegrated contact-alert electronics of theThermo Scientific Continuµm and ThermoScientific Continuµm XL which not onlyspeeds analysis and assures good samplecontact with the crystal, but also allowsunattended ATR mapping.

Product Specifications

PS50959_E 09/10M

Depth of penetration of Slide-On hemispherical and Tip ATR crystals. The TipATR crystal angle of incidence provides the greatest depth. The combinationof the three crystals provides a depth range, depending on the sample, from0.4 to about 0.8 micron at 2000 cm-1.

Technical SpecificationsGe Hemispherical Si Hemispherical Ge Conical Tip

Material Germanium Silicon GermaniumRefraction index 4 3.4 4Depth of penetration @ 2000 cm-1 0.4 micron 0.6 micron 0.8 micronMedium angle of incidence 55 degrees 55 degrees 25 degreesContact area diameter 120 micron 120 micron 100 micronTypical sample area 25 micron 25 micron 20 micronMinimum sample area* 12 micron 12 micron < 10 micronCrystal probe length 2.5 mm 2.5 mm 6 mmSurvey ATR Yes Yes YesSpectral range cut-off 650 cm-1 650 cm-1 650 cm-1

* Note: Minimum sample area is typically achieved with a Continuµm™ aperture size of 30 x 30 micron divided by thecrystal refractive index.

Ordering InformationPart Number Description

0045-419 Slide-On ATR with Silicon hemispherical crystal0045-420 Slide-On ATR with Germanium hemispherical crystal840-169500 Slide-On ATR with Tip ATR Ge crystal0045-402 15X Reflachromat objective*

*Note: If your microscope does not have the 15X Reflachromat Objective, one must be purchased for use with theSlide-On ATR.

Replacement Parts and OptionsPart Number Description

0045-312 Si hemispherical crystal slide0045-313 Ge hemispherical crystal slide0045-421 Si replacement hemispherical crystal0045-422 Ge replacement hemispherical crystal840-169600 Tip ATR Ge crystal with slide470-267500 Tip ATR Ge replacement crystal

Note: Tip ATR Ge crystal slide is compatible with existing Continuµm series Slide-On ATR Objectives.

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