Powder characterisation
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Microscopy and image processing
Microscopy and image processing
| analysis method |
measurement range |
measuring result | pratice |
|---|---|---|---|
| dynamic image analyses, Qicpic,Sympatec | 1,8-3755µm | PSD, particle shape | solid-particle, e.g. fibers |
| light microscope with digital image acquisition | >10 µm | PSD, particle shape, surface morphology and so on |
solid-particle, e.g. fibers |
| SEM image analysis GeminiSEM 300, Zeiss |
>10 µm | PSD, particle shape, surface morphology and so on |
solid-particle, e.g. fibers |
Dry powder characterization
| analysis method |
measurement range |
sample-size |
measuring result | pratice |
|---|---|---|---|---|
| Siebung | ||||
|
dry sieving |
20...20000 µm |
20...250g | particle size distrubation(PGV) | powder, bulk solids |
| Winkelabhängige Lichtstreuung | ||||
| Laser diffraction HELOS KR, Sympatec |
0,18...3500 µm |
0,1...100g | particle size distrubation (PGV) | powder, bulk solids |
Integral purpose specific surface
| analysis method | measurement range |
sample-size |
measuring result | pratice |
|---|---|---|---|---|
| Permeabilitätsmethode | ||||
| Blaine-Gerät (Permeabilität) | < 3 g |
volume specific surface |
powder, z.B. builing materials | |
| Photometrische Methode | ||||
|
Spekol |
0,2...3 m2/g | < 2 g |
volumen specific surface |
Slurry, emulsionen |