Glass M/Fibre Filter Circles Whatman GF/A 4.7

All Whatman Glass Microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Grade GF/A: General purpose high efficiency glass micro-fibre filter. Particle retention to 1.6µm. Manufactured without chemical binder from high grade borosilicate glass They are suitable for gravity or low suction filtration Filtration speeds generally very much higher than conventional cellulose papers Efficient retention of micron size particles Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models) Can be used up to 550°C Wide range of applications including: retention of fine analytical precipitates retention of biochemical gelatinous precipitates water/air pollution analyses as prefilters for membranes scintillation counting radioimmunoassay