Glassfiber Filter - with Binder Recommended for environmental analysis, control of air and water pollution. Made of 100% borosilicate microfibers Glass fiber filters retain fine particles up to 1 μm in size from liquids, air and gases even hold aerosols with 0.3 - 0.5 μm. The large surface area (approx. 2 m²/g) ensures an extraordinary absorption capacity. Extremely low metal content. Chemical stability : retains all properties in contact with acid solutions (except hydrofluoric acid) and alkaline solutions at moderate concentrations. Stability at high temperatures: retains all properties up to 500 ºC (180 ºC for GF 10). High flow rate and high air permeability. This product is equivalent to: Schleicher-Schüll GF6 -- Whatman GF6 -- Macherey Nagel 85/90Meer tonenMinder tonen