Recommended filters for environmental analysis and controlling both air and water pollution.

• Made of 100% borosilicate glass fibres with binders.
• Glass fibre filters capture fine particles down to 1 μm from liquids, in air, gases and aerosols with even 0.3 – 0.5 μm being adsorbed.
• The large surface area (approx. 2m²/g) provides an outstanding retention capacity.
• Extremely low content in alkali-earth metals.
• Chemical stability: It keeps all its properties in contact with acid solutions (except hydrofluoric acid) and basic solutions at moderate concentrations.
• Stability at high temperatures: It keeps its properties up to 500ºC, and 180ºC for GF 10.
• High flow speed and high permeability to air.

These types are available as filter circles with the following sizes (in mm): 25 – 37 - 47 – 55 – 70 – 90 – 110 – 125 – 142 – 150.

Other sizes, sheets, rolls and special cuts are available on request.