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Capsule Filters

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Our Whatman Polycap capsule filters are available in three sizes with effective filtration surface areas ranging from 500 to 1500 cm². Capsules are available with membranes such as PES, nylon, PTFE, and non-woven polypropylene and glass fiber depth medias. Carbon Cap also contains activated carbon for organic absorption. The capsules are available with a variety of end fittings such as different size hose barbs and both male and female threaded connections. Sterile and non-sterile options are also available.

Whatman Polycap capsule filters are recommended for filtration of large volumes of liquids or gases. Pleated cartridges provide large membrane surface area within a compact capsule housing for high throughput and high flow rates. A wide selection of media provides efficient filtration solutions such as removal of larger particulates with depth filter media or removal of bacteria through membrane filtration.


Whatman Carbon Cap

Carbon Cap capsule filters are filled with activated carbon and include a pleated glass fiber filter. They are suitable for adsorption of organic vapors from air, and for removing color, organics, and chlorine from water.

Polycap AS 36 mm,Polycap HD 75 mm,Polycap TF 75 mm and Polycap SPF 36 mm
Whatman Polycap AS

GE’s Whatman Polycap AS (Aqueous Solution) combines a nylon membrane filter and glass microfiber (GMF) prefilter for a long lifetime device that can filter large volumes of even difficult, particulate-laden samples.

Polycap GW
Whatman Polycap GW

Specifically designed for field sampling, GE’s Whatman Polycap GW ground water sampling filter capsules are a polyethersulfone (PES) filter that can be used as a convenient in-line filter unit.

Whatman Polycap HD

Polycap HD (Heavy Duty) capsule filter offers a broad range of particle size retention ratings and excellent filtrate purity with polypropylene filters (PP).

Whatman Polycap SPF

GE’s Whatman Polycap SPF (Serum Prefilter) Capsule Filters are optimized for prefiltration applications. They are typically used upstream of a Polycap AS or a Polycap TC capsule during enzyme and buffer filtration.

Polycap TC Series
Whatman Polycap TC

Whatman Polycap TC filtration capsules from GE feature dual layer polyethersulfone (PES) membranes and provide efficient filtration for aqueous solutions.

Polycap TF Series
Whatman Polycap TF

GE’s Whatman Polycap TF filters are made with durable, hydrophobic polytetrafluoroethylene (PTFE) membranes in a polypropylene housing for use with organic solvents and chemically aggressive solutions.