Appearance:
Light hazel powder.
Odour:
Characteristic.
Potency (microbiological):
≥ 5000 IU/mg (on "as is" basis).
Absorbance:
305 nm: ≥ 0.6.
Loss on drying:
Equal to or not more than 5.0%.
Particle size (laser diffraction):
min. 90%: < 10 µm.
min. 99%: < 16 µm.
Microbial count:
Total aerobic bacteria ≤ 100 cfu/g.
Shelf-life:
3 years in the original packaging under 'storage conditions'.
Storage conditions:
Below 25°C, protected from light and moisture.