Solids:
Spread powdery and grained samples evenly on the sample pan.
Crush coarse-grained samples using a mortar or similar device. Avoid any heat
supply when crushing the sample as this will cause moisture loss.
Liquids:
For liquids, pastes or melting samples, it is recommended to use the glass fibre filt
4.5 Glass fibre filter circle
Glass fibre filter circles ensure that liquid samples are evenly spread on the sample pan
and prevent the combustion of solids.
The glass fibre filter circle has the following advantages:
4.5.1 even spreading due to capillary action
4.5.2 no formation of drops
4.5.3 quick evaporation due to larger surface
4.6 Practical advice
Before starting the measurement, place the sample pan and, if appropriate, the glass
fibre filter on the pan retainer and tare it to make sure that only the weight of your
sample is assessed.
If you carry out several consecutive measurements, keep in mind that the temperature
from the previous measurement still obtains in the measuring chamber and that
evaporation already takes place when the cover is closed. This might affect the
measuring results.
Therefore, you must either allow some time for the drying chamber to cool down or
accept the deviations and start the next measurement as soon as possible
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