Catálogo General de Material para Laboratorio

Continued on next page To see other variants and accessories, please enter the webcode on our website. w e b c o d e 745 Glass Filters w e b c o d e WW6PB008 Quartz Microfibre Filters, Hahnemühle These filters are recommended for atmospheric pollution control and for particles deter- mination at high temperatures. • Made of pure quartz microfibre (SiO 2 ), free of binding elements or additives • Perfect for trace analysis for their extremely low metal content • Determination of suspended particles (SPM and TSP) in the ambient air pursuant to the relevant specifications of the US EPA (Environmental Protection Agency) and EN 23210 • 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 chem- ical reactions under extreme conditions with acid gases (HCl, SO 2 , SO 3 , H 2 SO 4 , NO and NO 3 ) • Excellent resistance to solvents: bases, acids (except hydrofluoric acid) and alkaline substances • Stability at high temperatures: higher resistance than glass microfiber, up to 1000ºC Technical specifications: Grade Weight g/m² Thickness mm TSI efficacy % (particles 0.3 µm) T Max C° Binder QFH 85 0.45 99.999 1000 no Vers. Dimensions mm Order No. PU pc/Pack Filter circles Ø 47 10 15 90047 50 Filter circles Ø 150 10 15 90150 50 Sheets 203 × 254 10 15 93254 50 Other sizes on request. 1 2 Glass fiber filters, MACHEREY-NAGEL 1 MN 85/90 Glass fiber filter Most widely used general purpose glass fiber filter with very good mechanical stability. The filter contains an organic binder. Thickness: 0.40 mm Basis weight: 90 g/m 2 max. termperature: 200 °C Type Diameter mm Order No. PU pc/Pack Round filter MN 85/90 55 10 46 94505 100 Round filter MN 85/90 70 10 46 94507 100 Round filter MN 85/90 90 10 46 94509 100 Round filter MN 85/90 110 10 46 94511 100 Round filter MN 85/90 125 10 46 94512 100 Round filter MN 85/90 150 10 46 94515 100 ‼ Available only in original packaging units. No fractions possible. 2 MN 85/90 BF - Binder free glass fiber filter Suitable for difference weight analysis. This paper is especially used in water treatment facilities for example for determination of undisclosed solids. Thickness: 0.40 mm Basis weight: 90 g/m 2 max. termperature: 500 °C Type Diameter mm Order No. PU pc/Pack Round filter MN 85/90 BF 55 10 46 94655 100 Round filter MN 85/90 BF 70 10 46 94607 100 Round filter MN 85/90 BF 90 10 46 94609 100 Round filter MN 85/90 BF 110 10 46 94611 100 Round filter MN 85/90 BF 125 10 46 94612 100 Round filter MN 85/90 BF 150 10 46 94615 100 ‼ Available only in original packaging units. No fractions possible. Separating Systems Filtration