Sartorius Nongridded Sterile Cellulose Membrane Filters

Description

• Ensure quality control in routine microbiological filtering
• Sartorius Nongridded Sterile Cellulose Membrane Filters are single-packed membranes used for colony counting, particle testing, microscopy and sterility testing
• Choose between cellulose acetate or cellulose nitrate membranes in a variety of pore sizes
• Sterile, individually packaged filters for strict quality control Pre-sterilized via gamma irradiation at 25kGray Ready-to-use to save preparatory time Avoids contamination of remaining filters in opened packs Filter identification and lot number are printed on each individual envelope Each membrane is checked to ensure: It is not damaged in any way It is positioned correctly with no slippage under the edge seal It is free of particles Each envelope has readable lettering High-quality membranes for a variety of lab applications Defined particle retention and outstanding, reliable recovery rates for microorganisms Choice of two membrane materials: Cellulose nitrate filters (mixed cellulose ester) assure effective retention combined with high flow rates and optimal colony growth Cellulose acetate filters combine high flow rates and thermal stability with very low adsorption characteristics Available in 7 different pore sizes: 0.2μm, 0.45μm, 0.65μm, 0.8μm, 1.2μm, 3.0μm and 8.0μm 8μm filters are used as prefilters in a prefilter attachment
• They retain coarse particles, while allowing microorganisms through for recovery on a bacteria-retentive filter 0.2μm filters are the standard for sterile filtration and are validated by the Bacteria Challenge Test (BCT) 0.45μm filters are manufactured according to ISO 7704 White, un-gridded filters in 47 or 50mm (1.9 or 2 in.) diameter sizes