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EZFlow Syringe Filter, Hydrophilic PTFE, 0.22um: 13mm, 25mm, & 33mm

Whatman GD/X Sterile Syringe Filter, PVDF, 25mm, 0.2μm & 0.45μm

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Whatman is a registered trademark of GE Healthcare and GE Life Sciences

Whatman Sterile PVDF Syringe Filter, 0.2um pore size 6900-2502 & 0.45um pore size 6900-2504

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Whatman, GE Life Sciences GD/X Sterile Syringe Filters

PVDF membrane, sterile, pore size: 0.22 μm & 0.45 μm, diam. 25 mm  

The Whatman GD/X 25 syringe filter is specifically designed for high particulate loaded samples greater than 10mL in size. GD/X syringe filters are constructed with a pigment-free polypropylene housing containing a pre-filtration stack of Whatman™ GMF 150 (graded density) and GF/F glass microfiber membrane media. The innovative, graded density of the GMF 150 pre-filter medium has a coarse top layer meshed with a fine bottom layer that retains particles to 1.0 µm. The GF/F filter then retains particles down to 0.7 µm. Final filter has a 0.22 or 0.45 um filter pore and PVDF (PolyVinyliDene Fluoride) membrane. This innovative pre-filter stack is then followed with the primary filtration membrane. Whatman™ GD/X™ filters eliminate sample contamination, greatly reduces the need to carry out separate prefiltration step with difficult to filter samples, and allows you to filter even the most difficult samples with less hand pressure. GD/X™ syringe filters can process three to seven times more sample volume than standard syringe filters. The syringe filter construction facilitates exceptional loading capacity with fast flow rates. This prevents the build-up of back pressure typically caused by the blocking of an unprotected membrane. Luer lock end for syringe attachment, Luer slip end for needle attachment.




  • Membrane: PVDF
  • Polypropylene housing
  • Features: Glass fiber prefilter
  • Filtration Area: 4.6cm².
  • Diameter: 25mm. Inlet: Female Luer Lock. Outlet: Male Slip Luer.
  • Pore Sizes: 0.22 μm & 0.45 μm
  • Sterile. 
  • Manufacturer: Whatman/GE Healthcare


Whatman Part No. 6900-2502 and 6900-2504

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  1. Decent review by Mary O on 6/20/2017

    Pretty good for the price. Will clog if not properly pre filtered .

  2. The Gold Standar review by D on 5/28/2017

    Whatman filter have been the gold standard for a long time. They just work. Reasonable flow rate and confidence in the company and product with an unblemished record. **Using filtered oils speeds thing up considerably, compared to the unfiltered USP oils**

  3. Works great review by Tyler on 4/26/2017

    Perfect for my experiments and holds up well to strong solvents. Will buy again.

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