Whatman Products
Glass Microfibre Filters
Glass Microfibre 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 550°C 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.
Cellulose fi lters, trace element composition
Typical values (μg/g paper)
QM- A* | EPM 2000 | 934-AH™ | 934-AH™ | |
|---|---|---|---|---|
Arsenic (As) | < 1 | < 1 | 24 | 5 |
Beryllium (Be) | < 1 | < 1 | < 1 | < 1 |
Cobalt (Co) | < 1 | < 1 | < 1 | < 1 |
Cadmium (Cd) | < 1 | < 1 | < 1 | < 1 |
Copper (Cu) | < 1 | 5 | 3 | < 1 |
Lead (Pb) | < 1 | 3 | 9 | 5 |
Manganese (Mn) | 2 | 20 | 18 | 6 |
Mercury (Hg) | < 1 | < 1 | < 1 | < 1 |
Nickel (Ni) | 1 | 1 | 3 | 1 |
Selenium (Se) | < 3 | < 3 | < 3 | < 3 |
Silver (Ag) | < 1 | < 1 | < 1 | < 1 |
Thallium (TI) | < 1 | < 1 | < 1 | < 1 |
