PPS filters are validated using test procedures that comply with ASTM F 838-15(ae1) protocols for the determination of bacterial retention in filters used for liquid filtration. The challenge level is a minimum of 107 organisms per cm2 of filter media. CPF filters have > 7-log removal when challenged with the organisms listed below (0.03μm, 0.10μm and 0.22μm meet the FDA definition of sterilizing grade filters). Validation Guides are available upon request.
- 0.03μm: Acholeplasma laidlawii
- 0.10μm: Brevundimonas diminuta
- 0.22μm: Brevundimonas diminuta
- 0.45μm: Serratia marcescens
- 0.65μm: Saccharomyces cerevisiae
Available from 5-40 inches in length with several end connections and O-ring options. For applications using elevated temperatures, PPS/HT Cartridges can be used in processes up to 203°F.
These filters are PPS cartridges encapsulated in a polypropylene shell to minimize exposure to process fluids. A popular choice for single-use applications and can be disposed of easily. Sizes range from 2-30 inches in length. PPS Capsules are available pre-sterilized.
Mini-capsules are designed for lab scale testing, process development and small batch production with a filtration area of 500 cm2. PPS Mini-Capsules are available pre-sterilized.