14 . HATR Sampling Accessory User’s Guide
Applying Pressure
Good contact between the sample and the surface of the crystal is important to prevent loss
of beam penetration. To aid this, a pressure arm can be used to apply controlled force to the
sample to make better contact with the crystal. The pressure arm is used in conjunction with
either a volatiles cover (part number L1205436) or a powder press (part number L1201944),
as described in Table 1.
Table 1 Use of volatiles cover and powder press
Item
Flat top plate
Trough top plate
Volatiles cover Used to apply pressure to polymer
films or laminates.
Used to prevent evaporation
(without use of pressure arm).
Powder press
Not applicable.
Used to apply pressure to ensure
good contact when analyzing
powders.
