Recommended for analysis of particles and aerosols in gases and air.

• Filters made of pure quartz microfibre (SiO₂), free of binding elements or additives

• Extremely low content in alkali-earth metals.

• Excellent retention of very fine particles through the adsorption mechanisms of quartz fibres: > 99 % according to BS 4400.

• Air permeability: extremely high.  Able to pass through large volumes of air.

• Excellent chemical 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); except HF.

• High resistance to solvents.

• Higher temperature resistance than glass microfiber, up to 1000ºC.