Seitz P-series depth filter sheets were especially developed for the strict requirements in biotechnological and pharmaceutical industries. For many years, manufacturing has been carried out with stringent in-process control methods. This manufacturing approach assures constant filtration quality as well as a very high purity of the filter medium, in line with the requirements of the pharmaceutical industry.
The P-series depth filter sheets are available in 10 different grades. Due to specific manufacturing methods, the distinguishing feature of the P-series is their high purity resulting in a very low release of extractables as well as an extremely low endotoxin content (<0.06 EU/mL prior to rinsing with 50 L/m² WFI). As part of Pall’s standard flushing recommendations, further lowering of extractable and endotoxin levels can be achieved (as documented in USTR 2366).

Available product range and typical applications
• EKS-P up to SUPRA 80 P are microorganism reducing filter sheets for depth filtration in the biotechnological and pharmaceutical industries. Typical applications include clarification of fermenter broth, TFF permeate, cell cultures, protection of chromatography columns and membrane processes, protection of sterile filter membranes, filtration of therapeutical proteins, vaccines, diagnostics and blood products, filtration of nutrients and DNA removal.
• K 100 P up to K 250 P are depth filter sheets for fine filtration in the pharmaceutical and biotechnological industries. Typical applications include filtration of fermenter broth, TFF permeate, therapeutical proteins, vaccines, diagnostics and blood products, filtration of nutrients, separation of adsorbents, and filter aids.
• K 700 P and K 900 P are depth filter sheets for coarse filtration in the biotechnological industries. Typical applications include filtration of fermenter broth, cell culture, therapeutical proteins, vaccines, diagnostics and blood products.