Qualitative filter paper, Grade 598½, folded filters
Medium to fast, 8 to 10µmthick filter paperfor fast filtration of coarse precipitatesWeight: 140g/m²Thickness: 0.32mm
Qualitative filter paper, Grade 602 h, circles
Slow < 2µmthick filter paperfor fine precipitatesWeight: 84g/m²Thickness: 0.16mm
Qualitative filter paper, Grade 602h½, folded filters
Slow < 2 µmthick filter paperfor fine precipitatesWeight: 85 g/m²Thickness: 0.15 mm
Qualitative filter paper, Grade 604½, folded filters
Fast, 12 to 25µmtime saving, because folded filters have a larger surface areafilter faster than comparable circular filtersfor coarse precipitates (e.g. hydroxide and sulphide)Weight: 80g/m²Thickness: 0.19mm
Qualitative filter paper, thick, Grade 602eh ½, folded filters
Very slow, <2 µmthick filter paperfor fine precipitatesWeight: 85g/m²Thickness: 0.15mm
Qualitative filter papers MN 614, round filters
Medium-fast.EmbossedFor determination of sugar content, colour, essential oils and emulsionsWeight: 75 g/m2Thickness: 0.25 mm
Qualitative Filters 551, black, round filters
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.
Qualitative Filters for beer analysis
Suitable for analytical methods in breweries to filter and analyse, based upon recommended procedures of the EBC (European Brewery Convention).Medium fastGrained surfaceFurther sizes on request.
Qualitative Quartz microfibre filters, QFH, round filters
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 additivesExtremely low content in alkali-earth metalsDetermination of suspended particles (SPM and TSP) in ambient air acc. to the directive of the US EPA (Environmental Protection Agency) and the EN 23210Retention: Excellent retention of very fine particles through the adsorption mechanisms of quartz fibresChemical 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 substancesStability at high temperatures: higher resistance than glass microfiber, up to 1000 °CWeight: 85 g/m2Thickness: 0.45 mmFurther sizes on request.
Qualitative Quartz microfibre filters, QFH, sheets
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 additivesExtremely low content in alkali-earth metalsDetermination of suspended particles (SPM and TSP) in ambient air acc. to the directive of the US EPA (Environmental Protection Agency) and the EN 23210Retention: Excellent retention of very fine particles through the adsorption mechanisms of quartz fibresChemical 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 substancesStability at high temperatures: higher resistance than glass microfiber, up to 1000 °CWeight: 85 g/m2Thickness: 0.45 mmFurther sizes on request.
Quantitative filter paper, Grade 391 - blue spot, circles
Very slow filtration.Other formats and diameters are available on request.
Quantitative filter paper, Grade 391 - blue spot, sheets
Very slow filtration.Other formats and diameters are available on request.
Quantitative filter paper, Grade 589/1, circles
Fast 12 to 25µmBlack ribbonfor coarse, high volume precipitatesfor determinations according to the German Standard Methods for the examination of water, waste water and sludge.most frequently used quantitative filterWeight: 80g/m²Thickness: 0.19mm
Quantitative filter paper, Grade 589/2
Medium fast, 4 to 12 µm. White ribbon.for the analysis of foodstuffsfor carbonates of alkaline earth metals, (NH4)3[P(Mo3O10)4] x aq., Mg(NH4)PO4, CaC2O4 (hot precipitates)Weight: 85g/m²Thickness: 0.18mm
Quantitative filter paper, Grade 589/2, folded filters 1/2
Medium fast, 4 to 12 µm. White ribbon.For the analysis of foodstuffsWeight: 85 g/m²Thickness: 0.18mm
Quantitative filter paper, Grade 589/3, circles
Slow < 2 µm. Blue ribbon.for very fine precipitates and small particlesfor soil analysisfor BaSO4 (hot precipitate), PbSo4, Cu2O, ZnS, NiSWeight: 84 g/m²Thickness: 0.16 mm
Quantitative filter paper, type MN 640 m, circles
Medium-fast, smooth, ashless.
Quantitative filter paper, type MN 640 w, circles
Fast filtration, smooth, ashless.
Quantitative filter paper, type MN 640 w, circles
Fast filtration, smooth, ashless. With elevated border.
Quartz microfibre filters, grade QM-A, round filters
Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500 °C.Manufactured from quartz microfibre to withstand high temperatures. Can be used up to 500 °C.
Quartz microfibre filters, grade QM-A, sheets
Glass microfibre filters have a fast filtration and a high loading capacity and particle retention rate. Manufactured without chemical binder from high grade borosilicate glass. (Exception: GF6, GF9). They are suitable for gravity or low suction filtration. Filtration speeds generally very much higher than conventional cellulose papers. Efficient retention of micron size particles. Must be used flat. Ideal for use in flat perforated plate Buchner type funnels (not sintered glass models). Can be used up to 500 °C.Manufactured from quartz microfibre to withstand high temperatures. Can be used up to 500 °C.
Quartz-micro Fleece filter MK 360, round filters
Temperature resistance up to max. 900 °CEach batch is checked and certified for trace elementsMade from micro-quartz fibers of extreme purity, binder-freeEspecially good with small amounts of particles
Quartz-micro Fleece filter MK 360, sheets
Temperature resistance up to max. 900 °CEach batch is checked and certified for trace elementsMade from micro-quartz fibers of extreme purity, binder-freeEspecially good with small amounts of particles