Description

Glass microfiber filters
Whatman glass microfiber filters are manufactured from 100% borosilicate glass and are available with or without binder. These depth filters combine fast flow rates with high loading capacity and the retention of very fine particles, extending into the sub-micron range. Glass microfiber filters can be used at temperatures up to 550oC and are excellent for use in applications involving air filtration and for gravimetric analysis of volatile materials where ignition is involved.
Whatman Multigrade GMF 150 is particularly valuable for the prefiltration of larger volumes and solutions that are normally difficult to filter.

Binder-free glass microfiber (GMF) filter papers
Grade GF/F (0.7 um*)
This high-efficiency filter will retain fine particles down to 0.7 um. 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 um—0.8 um 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 is recommended for nucleic acid binding and purification.