Filter Papers, Grade 541, quantitative, sheets
High wet-strengthHigh chemical resistance to strong acid and alkali suspensionsRetention of gelatinous precipitate22 µm nominal particle retention ratingFast flow rate (Herzberg filtration speed 34 s)Maximum of 0.006 % ash concentration
FilterPaper, quantitative, wet-strength, round filters
Hardened ashless filters, especially recommended for vacuum and pressure filtration, and for the use of acidic and alkaline solutions.Acid-washed and rinsed with waterFree of minerals and metallic ions, ideal for the detection of trace metalsHigh wet strength, easy to scrape off or wash off precipitatesHigh resistance to aggressive chemical components, like sulphuric and nitric acids (up to 40 % at 50 °C) and alkalis (up to 10 % at 20 °C)
Kieselguhr Filter Paper 287, round filters
Recommended for filtration of the finest semi-colloidal turbidities.For separation of very fine semi-colloidal turbidityClarification of extracts of soil suspensions, of milk serum, of starch solutions and sugar-containing solutions prior to polarimetry and refractometryFor retention of protein precipitates and slime particles from solutionsClarification of urine samples
LLG-Quantitative filter paper, circles, fast
Made from 100 % cellulose.Filtration speed according to DIN 53137.Capacity of separation according to DIN 53135.Pore size 20 to 25 µm.Most frequently used quantitative filterFor PbS, Ag2S, FeS, carbonatesAshless, equivalent white tape
LLG-Quantitative filter paper, circles, medium fast
Made from 100 % cellulose.Filtration speed according to DIN 53137.Capacity of separation according to DIN 53135.Pore size 5 to 8µm.For NH4MgPO4, CaC2O4, BaSO4Ashless, equivalent red tape
LLG-Quantitative filter paper, circles, slow
Made from 100 % cellulose.Filtration speed according to DIN 53137.Capacity of separation according to DIN 53135.Pore size 2 to 3 µm. For very fine precipitates and small particlesFor soil analysisFor BaSO4 (hot precipitate), PbSO4, Cu2O, ZnS, NiSAshless, equivalent blue tape
LLG-Quantitative filter paper, circles, very fast
Made from 100 % cellulose.Filtration speed according to DIN 53137.Capacity of separation according to DIN 53135.Pore size 15 to 20 µm.For coarse, high volume precipitatesFordeterminations according to the German Standard Methods for the examination of water, waste water and sludgeForFe(OH)2, Al(OH)3, NaSO4Ashless, equivalent black ribbon
Phase separators, 1PS
A silicone impregnated, water repellent paper which can be used to separate aqueous solutions from immiscible solvents. The aqueous phase is retained and the organic phase passes through. Will retain solid particles. Can be used either flat under suction not exceeding 70mm Hg or quadrant folded in a conical glass funnel. Supplied in box of 100 circles.Note: This paper contains a small quantity of tin complex catalyst. It is therefore not recommended for use when this complex may cause interference, e.g. with the use of dithizone (diphenylthiocarbazone) reagent.
Phase separators, Grade 480, folded filters
Hydrophobic, silicone-impregnated filter paper. Allows the aqueous phase of an emulsion or other mixture to be separated based on water affinity. Suitable for the analysis of dressings or sauces.
Phase separators, Grade 480, round filters
Hydrophobic, silicone-impregnated filter paper. Allows the aqueous phase of an emulsion or other mixture to be separated based on water affinity. Suitable for the analysis of dressings or sauces.
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.