Syringe Filters:

Whatman GD/X disposable syringe filters are the ideal choice for the preparation of hard-to-filter samples. The syringe filters have a pigment-free polypropylene housing to eliminate sample contamination and contain a unique prefiltration stack of Whatman GMF 150 (graded density) and GF/F glass microfiber media, which allows you to filter even the most difficult samples with less hand pressure. Compared to an unprotected membrane, GD/X syringe filters can process three to seven times more sample volume.

GMF 150 (graded density) and GF/F are produced from 100% borosilicate glass microfiber. The unique, graded density GMF 150 medium has a coarse top layer meshed with a fine layer beneath that retains particles to 1.0 µm. A GF/F filter then retains particles down to 0.7 µm. Below the prefilter stack is the final membrane. This provides exceptionally good loading capacity with fast flow rates and avoids the build up of back pressure often experienced through ‘blocking’ of an unprotected membrane.

Features and Benefits
• 13 mm and 25 mm diameter syringe filters
• 13 mm device for samples up to 10 mL and 25 mm
 device for samples larger than 10 mL
• Sterile options available

Applications
• Hard-to-filter heavily particulate laden samples
• Dissolution testing
• Content uniformity
• Concentration analysis
• Routine sample preparation
• Food analysis
• Environmental samples
• Composite assay