Filter surface – Black with white grids
Pore sizes (µm) – 0.22, 0.45, 0.8, 1.2, 3
Diameters (mm) – 47 and 50
Wettability – Hydrophilic
Thickness (mm) – 115 – 145
Grid thickness (mm) – 3.1
Filter integrity (bubble point with water) – 0.22µm : min. 55 psi, 0.45µm : min. 29 psi
Sterility test – Passes (applicable for sterile membranes)
Growth inhibition test – Grids are non-toxic and do not inhibit the growth of microorganisms
Microbial retention test – Retention of >= 10e7 organisms/ sq.cm. of Serratia marcescens (0.45µm) and Brevundimonas diminuta (0.22µm)
Non-sterile membranes – Bulk-packed 100 membranes per boxSterile membranes – Individually packed 100 membranes per box