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HYPERION User Manual Bruker Optik GmbH
Operation 4
4.12 ATR objective - Important operating notes
4.12.1 General handling instructions
The ATR crystal is fragile. To prevent the ATR crystal from getting damaged, observe the
following handling instructions when working with the ATR objective:
➣ Important note: Spectroscopic measurements performed with a damaged ATR
crystal do not deliver reliable measurement results!
4.12.2 Cleaning the ATR crystal
Before each measurement, check whether the ATR crystal is clean (i.e. free of any parti-
cles from the previous sample). Residuals of the previous sample may lead to falsified
results.
Clean the ATR crystal using a lint-free cloth and a suitable solvent (e.g. ethanol, isopro-
pyl), if required.
Note
Risk of damaging the ATR crystal
➣ Handle the ATR objective with utmost care. Prevent the ATR crystal tip from fitting
the microscope stage. Especially in the following situations, be aware of the
potential risk of damage:
• attaching the ATR objective to the revolving nosepiece or removing the ATR
objective from the revolving nosepiece,
• swinging the ATR objective in the beam path with the microscope stage being
set too high,
• moving the microscope stage upwards to focus on the sample and
• pulling down the outer casing of the ATR objective to bring the ATR crystal in
the measuring position and/or set a certain contact pressure level.
➣ Using the ATR objective, the sample temperature should not exceed 40°C. In
case of a higher sample temperature, the ATR crystal may become detached.
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