6 8
Application examples - Appendix A1
Comments on the table
Wheat flour
Direct weighing-in.
No visible coloration due to decomposition.
Dried vegetables
Beans milled in grinder.
Drying profile not asymptotic, hence sample weight not greater than
2.5g dried vegetables.
Rapid drying for relatively short measurement time.
After drying, slight browning of dried vegetables.
Always use the same amount of sample.
Wet vegetables
Chopped spinach.
Dried on (glass fiber pad).
No visible coloration due to decomposition.
Butter
Butter vigorously mixed in cylindrical vessel using glass rod.
Dried on (glass fiber pad).
No visible coloration due to decomposition.
Processed cheese
Cheese grated.
Dried between 2 (glass fiber pads).
Melts during the drying process.
No visible coloration due to decomposition.
Marzipan filling
Small pieces pressed flat between two glass fiber pads.
Thickness including filter: <1mm.
Drying profile not asymptotic, hence low sample weight for short
measurement time.
Fruit juice concentrate
Well shaken before weighing.
Dried between two glass fiber pads.
Slight browning of the samples.
Pastry
Spread thinly on aluminum disk.
Pastry baked slightly brown after drying.
Well puffed up before weighing.
Dried on glass fiber filter.
No skin formation in contrast to drying without glass fiber pad.
No visible coloration due to decomposition.
Powdered milk
Direct weighing-in.
No visible coloration due to decomposition.
Potato chips
Milled in grinder, oily pulp dried on glass fiber pad.
Drying profile not asymptotic, oil vaporizes very slowly at low tempera-
tures, hence select low drying temperature, switch-off criterion 1.
Always use the same amount of sample.
Herbs and spices
Direct weighing-in.
Drying profile not asymptotic, flavoring materials volitile, hence select
switch-off criterion 2.
Always use the same amount of sample.
Honey
Melted in a closed vessel at 60°C.
Dried between 2 glass fiber pads.
No visible coloration due to decomposition.
Water-soluble coffee
Powder in a mortar. Drying profile not asymptotic. Different moisture
values at different drying temperatures (flavoring materials). Caffeine
sublimes above 178°C. Values comparable with reference method
obtained at a drying temperature of 103°C.
No visible coloration due to decomposition.
Tobacco
Milled in a grinder.
Drying profile not asymptotic (flavoring materials volatile), hence select
rapid drying for short measurement time, switch-off criterion 3.
Always use the same amount of sample.
Clay body (powder)
Direct weighing-in.
Gypsum (moist)
Mix well, direct weighing-in.
Step drying program 4 min. 50°C, 200°C.
Timed switch-off criterion: 10 min.
Surface water after 4 min.
Total moisture after 10 min.
Dispersion
Weighing-in using a syringe.
Dried on glass fiber filter. No visible coloration due to decomposition.
Solid wood
Direct weighing-in.
(2 cm* 3 cm* 1 cm), drying profile not asymptotic.
Sample very inhomogeneous.
110°C: 12.3% Switch-off criterion: 3
130°C: 13.5% Switch-off criterion: 3
180°C: 14.3% Switch-off criterion: 3
latex
Shake well.
Weighing-in using a syringe.
Dried between 2 glass fiber pads.
Slight odor of burnt styrene, but asymptotic drying profile.
Comparable results obtained at a drying temperature of 150C, but
lengthy measurement time necessary.
Cellose
Cut up moist, pulpy cellulose fibers finely and break up.
No visible coloration due to decomposition.
Suntan cream (emulsion)
Direct weighing-in.
Dried on glass fiber pad.
No visible coloration due to decomposition.
Acetylsalicylic acid product
Sample powdered in a mortar.
No asymptotic drying profile, hence gentle drying 105C, use switch-off
criterion 3.
No visible coloration due to decomposition.
Always use the same amount of sample.
Sewage sludge
Shake well.
Dried on a glass fiber pad.
All manuals and user guides at all-guides.com
