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mdi 0.2µm membrane filters (Discs/Cartridges/Capsules) are validated for retention of Brevandimonas diminuta at a challenge level of 107 org/cm² as per HIMA and ASTM F838-83. Other pore sizes like 0.45µm and 0.8µm are also validated with Serratia marcescens (0.5µm) and staphy lococcus aureus (0.9µm).
