Whatman™ Glass Microfiber Filter GF/F, Binder Free Cytiva

Whatman glass microfiber filters without binder feature low resistance to fluid flow and high particle-loading capacity. These filters can be used at temperatures up to 500ºC. The fine capillary structure of glass fiber filters can absorb large quantities of water, enabling spot tests and liquid scintillation counting methods.

Glass microfiber filters are mainly used in applications such as air or water monitoring and can be used as pre-filters for membranes.

Unlike membrane filters with a comparable retention value, it has a very rapid flow rate and an extremely high loading capacity. Because of the tight specification of 0.6 µm–0.8 µm particle retention and pure borosilicate glass structure, GF/F is the material upon which the EPA Method TCLP 1311 for Toxicity Characteristic Leaching Procedure was developed. It remains today the filter of choice.

Recommended for DNA binding and purification. Very effective in filtering finely precipitated proteins, GF/F can be used in conjunction with GF/D as a prefilter for the successful clarification of extremely ‘difficult’ biochemical solutions and fluids, and nucleic acids. This filter is available in the FilterCup and Disposable Filter Funnel format.

Particle Retention In Liquid: 0.7 µm
Filtration Speed (Herzberg): Approx. 325 s
Air Flow Rate     19 s/100 ml/in2
Typical Thickness     420 µm
Basis Weight     75 g/m2