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[Filter] Glass Microfiber Prefilters
관리자 2021-10-26 16:54:22
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Whatman manufactures glass microfiber filters which are used as prefilters for membranes. The excellent properties of the borosilicate glass microfibers enable Whatman to manufacture filters with high loading capacity and retention of very fine particulates.

The Whatman Multigrade GMF 150, used as a prefilter, nearly doubles the volume of sample filtered compared to a single density prefilter. Compared to an unprotected membrane, the volume of sample filtered is three to seven times greater. Conventional prefilters cannot perform in the same way as the Multigrade GMF 150 simply because prefilters of a uniform density do not have the loading capacity of the multiporosity filter technology advanced by Whatman. For highly particulate loaded samples, the performance of GMF 150 filters is recomended.
 

Glass Microfiber Prefilters

Catalog Number Description
Multigrade 150
1 μm Particle Retention Rating
1841-047 Multigrade GMF 150 Circles, 1 µm, 47 mm, 40/pk
1841-090 Multigrade GMF 150 Circles, 1 µm, 90 mm, 20/pk
2 μm Particle Retention Rating
1842-047 Multigrade GMF 150 Circles, 2 µm, 47 mm, 40/pk
1842-090 Multigrade GMF 150 Circles, 2 µm, 90 mm, 20/pk
Grade GF/B
1821-025 GF/B Glass Circles, 25 mm, 100/pk
1821-037 GF/B Glass Circles, 37 mm, 100/pk
1821-042 GF/B Glass Circles, 42.5 mm, 100/pk
1821-047 GF/B Glass Circles, 47 mm, 100/pk
1821-090 GF/B Glass Circles, 90 mm, 25/pk
1821-125 GF/B Glass Circles, 125 mm, 25/pk
Grade GF/D
1823-010 GF/D Glass Circles, 10 mm, 100/pk
1823-025 GF/D Glass Circles, 25 mm, 100/pk
1823-035 GF/D Glass Circles, 35 mm, 100/pk
1823-042 GF/D Glass Circles, 42.5 mm, 100/pk
1823-047 GF/D Glass Circles, 47 mm, 100/pk
1823-090 GF/D Glass Circles, 90 mm, 25/pk
1823-125 GF/D Glass Circles, 125 mm, 25/pk
1823-142 GF/D Glass Circles, 142 mm, 25/pk
1823-257 GF/D Glass Circles, 257 mm, 25/pk
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