Whatman Puradisc Syringe Filters by Cytiva

The Whatman Puradisc product range is available with a wide selection of sizes and membrane types to provide full flexibility for each application. For cold sterilization GE healthcare recommend the Puradisc sterile syringe filter with a 0.2 μm PES membrane.

The PES membrane is inherently hydrophilic, has low extractables, and exhibits low protein binding. These features allow samples to be filtered without any risk of contamination. The housing is made of pigment free polypropylene (PP) ensuring high quality sample preparation for critical applications. Cell culture additions up to 50 ml can be filtered (depending on the sample type) using the sterile Puradisc with 0.2 μm PES membrane.

GE Healthcare's Puradisc features:
•  Clean room manufacturing/production
•  Pore size 0.2 μm and 0.45 μm
•  Non sterile options available
•  Pigment-free polypropylene (polycarbonate for Puradisc 30 and Aqua 30)
•  Standard inlet and outlet luer connectors
•  Optional sterile, medical-grade blister pack
•  Choice of filter sizes (4 mm, 13 mm or 30 mm) to minimize sample loss
•  Other membrane types available

Whatman Puradisc 4 Syringe Filters
GE healthcare's Puradisc 4 Features:
•  4 mm diameter syringe filter
•  Sample volume up to 2 ml
•  Low hold-up volume < 10 µl ensures maximum sample recovery
•  Tube-tip format (optional)
•  Applications
•  HPLC samples containing low solid content – filtration will improve column life
•  CE (Capillary Electrophoresis) samples – filtration will eliminate spurious peaks
•  Sterile filtration of low volume samples
•  UV/Vis samples – filter directly into cuvette using tube tip
•  Refractometry – filter samples to prevent damage to instrument optics and improve accuracy of results
•  Minimizing non-specific binding to membrane (due to small membrane size)


Whatman Puradisc 13 Syringe Filters
GE healthcare's Puradisc 13 Features:
•  13 mm diameter syringe filter
•  Sample volume up to 10 ml
•  Low hold-up volume < 25 µl ensures maximum sample recovery
•  Glass microfiber option available
•  Tube-tip format (optional)

Applications:
•  Biological sample preparation
•  HPLC sample preparation


Whatman Puradisc 25 Syringe Filters
GE healthcare's Puradisc 25 Features:
•  25 mm diameter syringe filter
•  Sample volume up to 100 ml
•  Low hold-up volumes for maximum sample recovery
•  Glass microfiber option available

Applications:
•  HPLC aqueous sample preparation
•  Biological sample preparation
•  Buffer solutions
•  Salt solutions
•  Tissue culture media
•  Irrigation solutions
•  Sterile isolation


Whatman Puradisc 30 Syringe Filter
GE healthcare's Puradisc 30 Features:
•  30 mm diameter
•  Larger filtration area (44% greater in comparison with 25 mm)
•  Designed for aqueous samples

Applications:
• Filtration of protein-containing solutions with minimal protein loss (CA membrane)embrane)
•  Removal of cellular constituents from solution


GE healthcares's Whatman Puradisc Aqua 30
The Whatman Puradisc Aqua 30 is specifically designed for filtration of environmental samples prior to COD and DOC analysis. The membranes used in these devices are prewashed prior to assembly so as to reduce the organic carbon level.