2I-10800-10
23
Sample
type
Recommended
Anvil
Notes
Powders
Flat Anvil
Minimal sample is required, providing the
crystal is completely covered. To reduce
risk of damage the sample should be
finely powdered, with no hard lumps or
inclusions.
Flat Solids
Flat Anvil
For best results and to avoid the
possibility of damage, flat solid sample
should be smooth and homogenous with
no hard lumps or inclusions.
Pellets and
Beads
Pellet Anvil
Pellet beads less than 1.5 mm in
diameter are not suitable for use with
the pellet anvil and should be analysed
carefully using the Flat anvil.
Fibre
Samples
Flat Anvil
Lay the fibre(s) centrally across the ATR
crystal surface. If necessary, the ends of
the fibre can be taped down to hold
them in position before applying a load
from the anvil.
9.3. Liquid Sampling procedure
The procedure for collecting a liquid sample is broadly the same as a
Solid, with the exception that no load needs to be applied to the sample
(i.e. skip steps 3 and 5).
Sample solutions that fall within the pH range of pH5 to
pH9 are tolerated by the ZnSe crystal material. Stronger
acids and bases will damage ZnSe irreparably.
For liquid sample types Specac offer several different options for
containment.. Viscous samples and samples with high surface tension
can be used on the Standard puck. The Liquids puck has a well around
