Material: borosilicate glass (fibres), inorganic binding agent. Chemically resistant to the majority of organic and inorganic solvents, aggressive chemicals and highly concentrated bases (not resistant to hydrofluoric acid) Constant weight, negligible influence on fluctuations in ambient humidity Mechanically stable (limited bending resistance) Note: filter units and clamping fixtures must have flexible sealing surfaces. Glass fibre round filters Type GF 6 Applications: environmental analysis, biology, physics, drinks industry. Use: gas/air monitoring, water and waste water tests, scintillation measurements, dry mass determinations. Filtration speed: low Retention rate: 99.97% Retention range: <1 µm Surface weight: 80 g/m 2 Thickness: 0.35 mm