Smart iTR™ Attenuated Total Reflectance (ATR) Sampling Accessory

• Ideal for the analysis of solids, liquids, pastes and gels
• Available with different crystals for diverse sampling needs
• Single reflection crystal for general purpose material identification
• Optional three reflection crystal for increased sensitivity
• Optional specular plate gives extra flexibility when analyzing coatings on reflective materials
• Crystal plates are pinned in place with quick-release mounting for easy removal for cleaning or swapping and reproducible insertion with no alignment required
• ATR crystal plates are backed with a ZnSe focusing optic for optimal performance
• Large top plate accommodates most samples
• PTFE coated plate lifts clear easily for simple clean-up
• Precision machining and an nonreactive gasket provide a tight interface between the top plate and the crystal housing, so spills are not a problem
• High pressure clamp calibrated to deliver up to 10,000 psi of pressure and comes with interchangeable tips for hard, soft and pellet shaped samples
• Active Sample Area: 1.5mm for the single bounce ATR and 6mm for the 3 bounce ATR
• Specular Plate: Spectral range dependent on spectrometer; incident angle is 45°

Diamond ATR Crystal

Features

• Inert and robust — excellent for the analysis of hard, abrasive, reactive, caustic or corrosive materials
• A multi-purpose ATR with a depth of penetration of over 2μm at 1000cm^-1 and is used with a wide variety of samples
• Five-year warranty provided
• Configuration can be validated
• Disadvantage — intrinsic absorbtion from approximately 2300 to 1800cm^-1

Specifications

• Low wavenumber cutoff: 650cm^-1 (due to ZnSe lens)
• Depth of penetration: 2.03μm at 1000cm^-1
• Refractive index: 2.4
• Useful pH range: 1 to 14 (ZnSe 5 to 9)
• Incident angle: 42°

ZnSe ATR Crystal Features

• Most common ATR crystal — provides an excellent performing, lower cost option for general analyses
• Offers similarly outstanding throughput and a depth of penetration similar to diamond
• Can be used for a wide variety of samples, but is soft and not as chemically inert as the other crystals
• Over time it can be etched by acids and scratched by hard samples, which will eventually reduce sensitivity
• Configuration can be validated

Specifications

• Low wavenumber cutoff: 650cm^-1
• Depth of penetration: 2.03μm at 1000cm^-1
• Refractive index: 2.4
• Useful pH range: 5 to 9
• Incident angle: 42°

Germanium ATR Crystal

Features

• Hard and inert (although not as robust as diamond) with a high refractive index
• Provides a much shallower depth of penetration, making it ideal for highly absorbing or scattering samples such as carbon-black containing rubbers
• Provides huge performance through the mid-IR range, with upwards of 50% transmittance
• Offers a limited range, but good chemical resistivity to both acids and bases

Specifications

• Low wavenumber cutoff: 700cm^-1
• Depth of penetration: 0.67μm at 1000cm^-1
• Refractive index: 4.0
• Useful pH range: 1 to 14
• Incident angle: 42°

Silicon ATR Crystal

Features

• Hard, with a high refractive index
• Useful for strong absorbers or abrasive samples
• Suitable for temperature studies because it withstands thermal shock

Specifications

• Low wave number cutoff: 700cm^-1
• Depth of penetration: 0.84μm at 1000cm^-1
• Refractive index: 3.4
• Useful pH range: 1 to 12 Incident angle: 42°

Compatible with:

The Smart iTR Accessory is compatible with the Thermo Scientific™ Nicolet™ iS™ 10 FT-IR Spectrometer, the Thermo Scientific™ Nicolet™ iZ™ 10 Auxiliary Module, and the Nicolet 6700 and Nicolet 8700 FT-IR Spectrometers.

Recommended for:

• Most solids
• Liquids ranging from pH 1 to 14
• Acidic or alkaline materials
• Fibers
• Hard or oddly shaped samples
• Abrasive, caustic or corrosive materials
• Large or small samples
• Paint chips