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/D (2.7 um*)
Considerably faster in flow rate and overall filtration speed than cellulose filter papers of similar particle retention. The filter is thick and consequently exhibits a high loading capacity. It is designed as a membrane prefilter and available in sizes to fit most holders. GF/D will provide good protection for finely retentive membranes. It can be used in combination with GF/B to provide very efficient graded prefilter protection for membranes.