Volume specific surface area (VSSA) of powders
Determination of volume-specific surface area (VSSA) for the identification of nanoparticles.
VSSA can be calculated from the specific surface area obtained by N2 adsorption and the BET method and effective density obtained by He Pycnometry.
The measurement is a part of the EC recommendation for the definition of nanomaterials (2022/C229/01). According to the recommendation, materials with a VSSA of < 6 m2/cm3 are not considered nanomaterials.
- Suitable sample matrices
- Solid particles; food, feed, supplements, pharmaceuticals, and cosmetics in powder form
- Required sample quantity
- 50 ml
- Typical turnaround time
- 4 weeks after receiving the samples
- Available quality systems
- Accredited testing laboratory
- Device types
- Method expert
Cosmetics
Food, feed and supplements
Microscopy
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