Recommended filters for environmental analysis and controlling both air and water pollution.Made of 100 % borosilicate glass fibres with bindersGlass fibre filters capture fine particles down to 1 µm from liquids, in air, gases and aerosols with even 0.3 to 0.5 µm being absorbedExtremely low content in alkali-earth metalsChemical stability: It keeps all its properties in contact with acid solutions (except hydrofluoric acid) and basic solutions at moderate concentrationsStabile at temperatures up to 500 °CGravimetrical analysis of organic and inorganic impurities in water and waste water according to DIN 38409 and EN 872 (suspended particles)Measurement of immission, measurement of dust in air and gases, monitoring of the efficiency of filtration and dedusting, monitoring the combustion air of power plants and of the steel and iron industryMeasurement of dust release in workplace and production processes and the purification of compartment airMeasurement of scintillationFiltration time acc. to Gurley

Recommended for the detection of very fine traces of light-coloured particles and precipitates.Made of pure celluloses and with constriction of black additivesWhite and light-coloured particles can be detected easily by the strong contrast to the black filter paperWeight 95 g/m2Thickness 0,2 mmFiltration speed acc. to Herzberg 850 sFurther sizes on request.

Recommended for identification of substances, clarification of liquids and for the preparation of samples in a broad range of chemical analysis.Creped filter papers have a particularly large surface area and correspondingly shorter filtration timesFor quick separation of large particlesFor reliable clarification of viscous liquids

For use in dismountable filter holders.

DIN 12476. ISO 6556. Erlenmeyer shape. Heavy wall, for vacuum use. With ground 17.5/26 socket for vacuum tubing with 15mm to 18mm external diameter. These filtering flasks fulfil the regulations of the "equipment and product safety regulations".

Can be used in the 250ml capacity dismountable filter holder as a carrier for membrane and paper filters.

Cellulose nitrate (cellulose ester) membrane filters, white with black grid, for colony count and sterility testing, individually, sterile packaged / non-sterile.

Creped, strong when wet, thin.For viscous solutions and emulsions, such as anthracenes, gelatines, paints, thick juices and syrups.

The very low adsorption membranes are hydrophilic, solvent-resistant (pH 3-12) and therefore suitable for the particle removal from solvents.

White, individually sterile packed. Resistant to steam sterilisation up to 134 °C, or in dry heat up to 180 °C. Very low adsorption (important when filtering proteinaceous solutions). Suitable for particle removal and ultracleaning of aqueous solutions, methanol, ethanol, high-grade alcohols and residue analysis of fuels and oils. The extractable content of these filters make up < 1 % of their weight. Other pore sizes and formats available on request.Other patterns are available on request.

Very smooth surface, very strong, with enhanced wet strength. Chemically stable against acids and weak alkalis, especially suited to vacuum and pressure filtration.Other diameters / formats are available on request.

High wet strength.

Very slow filtration.Other formats and diameters are available on request.

Rapid filtration, coarse porosity.Other formats and diameters are available on request.

Medium speed filtration.Other formats and diameters are available on request.

Medium fast filtration.Other formats and diameters are available on request.

Other dimensions are available on request.

Smooth. For analytical and technical purposes, such as clarification, analytical sample preparation and particle analysis.

Wet strength. Suitable for analytical purposes, general laboratory work and for pressure and vacuum filtration.

Type 230. Polycarbonate (PC), white, non-sterile. Ultrapure, polycarbonate membrane with especially smooth surface and fine pore distribution. Applications include COD/TOC testing, particle analysis or epifluorescence microscopy.Other patterns are available on request.

Very smooth surface, very strong, with enhanced wet strength. Chemically stable against acids and weak alkalis, especially suited to vacuum and pressure filtration.Other diameter/formats are available on request!

Cellulose acetate membrane filters, white with black grid, 3 mm hydrophobic edge, for colony count and sterility testing, individually, sterile packaged.Other patterns are available on request.