Quantitative Filter Paper
Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter papers are used for straining with good retention and flow rates. These cellulose filters create a semi-permeable barrier perpendicular to a liquid or airflow in order to separate fine substances from liquids or air. Different grades of filter paper are available for performing various laboratory applications including routine lab work, ranging from coarse to fine filtration of particulates. Avantor offers a wide range of qualitative and quantitative filter papers with varying pore size, particle retention, flow rate and filtration times.
VWR®, Quantitative Filter Papers
Supplier: VWR Collection
424: Filtration of lead sulphide, iron sulphide, silver sulphide, alkali carbonate, lead chromate, arsenic, antimony, cadmium and foodstuffs. Determination of sand content in dairy products. Determination of whiteness of pulp in paper mills.
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VWR® Low Nitrogen Content Filters, Grade 521
Supplier: VWR Collection
Low nitrogen content filters for determination of nitrogen content in steel and iron samples dissolved in acid. Filtration of fine precipitates to dissolve according Kjeldahl method.
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#: 20864.320
Supplier: VWR Chemicals
#: 83640.320
Supplier: VWR Chemicals
#: 31770.294
Supplier: VWR Chemicals
#: 83645.320
Supplier: VWR Chemicals