Specac Silver Gate, Руководство пользователя

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Silver Gate™ Evolution ATR System
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dropping pipette can be used to dispense a liquid onto the recessed
ATR top plate assembly and a soft bladed spatula can be used to
spread a paste over the ATR crystal of either a flat or recessed ATR
crystal top plate assembly.
4. Collect and record the ATR spectrum for the sample.
5. To remove a liquid sample, any excess can be removed by sucking
up into a dropping pipette and cleaning any residual liquid sample
away using soft lens tissues and an appropriate solvent.
To remove a paste sample, any excess can be removed by careful
use of the soft bladed spatula and cleaning any residual sample
away using soft lens tissues and an appropriate solvent.
After cleaning (see
Notes on Cleaning page 32), the Silver Gate™
ATR accessory is ready to accept a new sample for measurement.
Notes on Cleaning
When cleaning either a ZnSe, Ge or Si ATR crystal of the Silver Gate™
ATR crystal top plate assemblies in preparation for a new sample, it is
very important to take care to avoid damaging the crystal materials.
Always wear gloves to protect yourself and the ATR crystal material.
Solvents such as water, methanol and acetone are suitable to use.
Avoid the use of halogenated solvents (e.g. dichloromethane,
chloroform, etc), as long term contact will result in degradation of the
epoxy glue bonding of the ATR crystal in the top plate assembly.
Sample solutions that fall within the pH range of pH4 to pH11 are
tolerated by ZnSe. Stronger acids and bases will damage ZnSe
irreparably.
When wiping away any solid or liquid sample, use very soft lens tissues
to avoid scratches being caused on the surface of the ATR crystal.
Scratches and blemishes to the ATR crystal surface will result in poor
light throughput for the ATR technique and an overall degradation in
the accessories performance.