Recommended filters for atmospheric pollution control and for particles determination at high temperatures.
Filters made of pure quartz microfibre (SiO2), free of binding elements or additives
Extremely low content in alkali-earth metals
Determination of suspended particles (SPM and TSP) in ambient air acc. to the directive of the US EPA (Environmental Protection Agency) and the EN 23210
Retention: Excellent retention of very fine particles through the adsorption mechanisms of quartz fibres
Chemical stability: excellent stability with hardly any loss of filter-material due to chemical reactions under extreme conditions with acid gases (HCl, SO2, SO3, H2SO4, NO and NO3)
Resistance to chemical reagents: excellent resistance to solvents, acids (except HF) and alkaline substances
Stability at high temperatures: higher resistance than glass microfiber, up to 1000 °C
