Recommended filters for controlling both air and water pollution.
These types are available as filter circles with the following sizes (in mm):
25 – 37 – 47 – 50 - 55 – 70 – 90 - 110 – 125 – 142 – 150.
Other sizes, sheets, rolls and special cuts are available on request.
Grade | Air permeability * [L/m2s] | Retention rate % NaCl-particle size <1 μm *** | Filtration Gurley [s] | Weight [g/m²] | Thickness [mm] | Max T [ºC] |
---|---|---|---|---|---|---|
GF 50 | 33 | 99,993 | 19 | 56 | 0.29 | 500 |
GF 51 | 11 | 99,993 | 44 | 140 | 1.00 | 500 |
GF 52 | 54 ** | 99,995 | 25 | 54 | 0.28 | 500 |
GF 55 | <10 | 99,999 | 67 | 75 | 0.40 | 500 |
* According DIN EN ISO 9237 ** Air resistance in mbar at 400 cm³/s, A= 10 cm² *** Tested with NaCl particles size <1 μm, main fraction at 0.3 to 0.5 μm