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The 25 Reflection Variable Angle ATR (P/N GS11000) is a vertically mounted ATR crystal accessory capable of being operated for a crystal incidence angle of between 30º to 60º.
The angle of incidence for the crystal is quickly and easily selected by rotation of a knurled adjustment screw. This moves the sample holder and crystal assembly to the correct position when the back face of the holder is in line with the required angle setting as indicated on the graduated plate.
The standard crystal holder (P/N GS11001) supplied with the ATR Accessory is for solid samples, but a liquids holder (P/N GS11003) and a paste holder (P/N GS11002) are available on request. Although the sample holder and crystal assembly can be positioned between the angles of 30º to 60º, it is only when the holder and crystal assembly are correctly aligned at the 45º angle, that 25 internal reflections are obtained within the crystal. Sufficient sample is required to cover both faces of the trapezium shaped crystal for 25 reflection events to be measured.
The ATR Accessory is supplied with a KRS-5 crystal as standard, but a variety of crystal materials such as ZnSe, Ge and Si are available to extend the sample handling and study capabilities of the accessory. The IR beam is directed through and collected from the crystal by four mirrors which are adjustable for both their rotation and tilt. The accessory is supplied with a standard 3” x 2” mounting plate that allows it to be positioned in the spectrometer sample compartment using the instruments own 3” x “2 mounting baseplate. In addition, the accessory is supplied with a support foot that is used in one corner of the base. The foot is adjustable for height to provide mechanical stability of the accessory whilst in the sample compartment. A thumb nut locks the foot in position.
Key Features
- Variable angle of incidence (30º - 60º)
- 25 Reflections
- Suitable for both FT-IR and dispersive instruments
- Two pin sample location on sample mount
- Standard 3” x 2” slide mounting
- Choice of crystal materials; KRS-5 as standard
- Interchangeable sample holders (solids, liquids and pastes)
Applications
- Solids
- Liquids
- Pastes
- Variable depth studies for coatings and films
Ordering Information
|
GS 11000 |
25 Reflection Variable Incidence Angle ATR. Includes: Solids Holder & KRS-5 Crystal (450) |
Options
| GS-11001 |
Solids holder for 25 Reflection ATR |
| GS-11002 | Paste holder for 25 Reflection ATR |
| GS-11003 | Liquid holder for 25 Reflection ATR |
Spares & Consumables
| GS-11000 | Includes: Solids holder and KRS-5 |
| GS-11004 | KRS-5 crystal (45°) |
| GS-11006 |
Ge crystal (45°) |
| GS-11009 | Si crystal (45°) |
| GS-11014 | ZnSe crystal (45°) |
| GS-11008 | PTFE gaskets (1 large, 1 small) for liquid holder (5 sets |
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