Whatman Polycap AS (aqueous solutions) capsule filters from Cytiva combines a glass microfiber (GMF) prefilter over a nylon membrane final filter to provide maximum filtration of difficult, particulate-laden solutions.

• First layer (GMF) acts as a prefilter to ensure longer membrane (0.2, 0.45, and 1.0 µm) life and higher filtration efficiency.
• Nylon membrane filter layer is inherently hydrophilic, has low extractables, is biosafe, and has excellent flow rates
• Polypropylene housing is thermally fused (no glues, adhesives, or extraneous materials), reducing extractable levels
• Can be tested with bubble point, pressure decay, or forward flow methods
• Manufactured according to ISO9001:2008 QMS standards