Glass Fibre Filters – without Binders

Recommended filters for controlling both air and water pollution.

 

  • Made of 100% borosilicate glass fibres without binders.
  • Glass fibre filters absorb the finest particles down to 1 μm from liquids, in air, gases and even aerosols with 0.3 –0.5 μm are separated.
  • The large surface area (about 2m²/g) provides an outstanding retention capacity.
  • Extremely low content in metals.
  • Chemical stability: It keeps all its properties in contact with acid solutions (except hydrofluoric acid) and/or basic solutions at moderate concentrations.
  • Stability at high temperatures: It keeps its properties up to 500 ºC.
  • High flow speed and high permeability to air.

Ordering information:

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 53887 ** 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