Composition:

SpermFilter® Stock Solution 100% consists of silane-coated colloidal silica particles suspended in HEPES-buffered EBSS (Earle’s balanced salt solution).

Quality control:

• pH:   7,20 – 7,90 (Release criteria: 7,20 – 7,60)
• Osmolality:    300 - 330 mOsm/kg
• Sterility test by the current pH. Eur. 2.6.1 / USP <71>: No growth
• Endotoxin:    < 0,5 EU/ml 
• Density:   1,1150 – 1,1250 g/m
• Human sperm survival assay (HSSA) (4h exposure):  ≥ 80%          
• Human sperm survival assay (HSSA) (24h exposure):  ≥ 75%
• Certificate of Analysis available upon request. 

Specifications: