1.Low hygroscopicity
2.Chemically and biologically inert, with no organic binders
3.Offer higher retention efficiency of fine particles (<3µm in size)
4.Resist clogging for greater loading capacity than cellulose paper filters
5.Autoclavable and usable to 500°C (932°F)
6.Filters should be used flat: folding will break the glass fibers
| Fisherbrand Grade | G8 | G6 | G4 | G2 |
| Particle Retention | 2.5µm | 1.6µm | 1.2µm | 1.0µm |
| Flowrate | Fast | Fast | Fast | Fast |
| Thickness | 0.69mm | 0.32mm | 0.28mm | 0.66mm |
| Weight | 121g/m2 | 57g/m2 | 51g/m2 | 140g/m2 |
| Applications | General purpose. Clinical specimen filtration. Recommended prefilter for 0.45µm pore size or smaller membrane filters. | General purpose. Air pollution monitoring. Biochemical biological filtration cells, precipitated proteins. Scintillation counting. Radioimmunoassays. | Water/wastewater analysis of suspended solids. Biochemical filtration. Microorganism retention. Harvesting lymphocytes, other cells. Scintillation counting. | Biological fluids, serum, blood fractions. Biochemical polymers, precipitated proteins. Industrial waste analysis. Prefilter for membranes. |
| Grade | G8 | G6 | G4 | G2 |
| | Diameter | |||
| 21mm | 21mm | 21mm | 21mm | |
| 25mm | 24mm | 24mm | | |
| 42.5mm | 42.5mm | 42.5mm | 42.5mm | |
| 55mm | 55mm | 55mm | 55mm | |
| 70mm | 70mm | 70mm | | |
| | 90mm | 90mm | | |
| | 110mm | | | |
| | 125mm | | | |
| | 150mm | | | |