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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. VWR offers a wide range of qualitative and quantitative filter papers with varying pore size, particle retention, flow rate and filtration times.
Description:VWR* Grade 313 Filter Paper, Fluted Circles, Folded, Qualitative, Diameter: 15 cm, Particle retention: 5um, Use for drug, pharmaceutical, liquor, tincture, chromatography and protein-free filtrations in clinical laboratory. Medium Fine porosity, Medium flow rate
Description:
15.0cm diameter. Useful in analytical operations involving filtration of cuprous oxide, lead sulfate, barium sulfate, manganese carbonate, and more. Fine porosity. Slow flow rate. 1um particle retention.
Description:
20.5cm diameter. For routine lab work. Suitable for student requirements in general chemistry. Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, and more. Medium porosity. Medium flow rate. 5um particle retention.
Description:
38.5cm diameter. For routine lab work. Suitable for student requirements in general chemistry. Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, and more. Medium porosity. Medium flow rate. 5um particle retention.
Description:VWR* Grade 413 Filter Paper, Qualitative, Diameter: 12.5cm, particle retention: 5um, Suitable for student requirements in general chemistry. Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, Medium porosity, Medium flow rate
Description:
9.0cm diameter. Retention of zirconium hydroxide, aluminum hydroxide, cobalt sulfide, and other coarse or gelatinous precipitates. Medium porosity. Medium Fast flow rate. 10um particle retention.
Description:VWR* Grade 454 Filter Paper, Quantitative, Diameter: 18.5 cm, Particle retention: 10um, Use for retention of zirconium hydroxide, aluminum hydroxide, cobalt sulfide and other coarse or gelatinous precipitates, Medium porosity, Medium Fast flow rate.
Description:
24.0cm diameter. Use for drugs, pharmaceuticals, liquors, tinctures, chromatography, and protein-free filtrations in the clinical laboratory. Medium Fine porosity. Medium flow rate. 5um particle retention.
Description:
38.5cm diameter. Good for coarse precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide, magnesium hydroxide, and more. Coarse porosity. Fast flow rate. 25um particle retention.
Description:
18.5cm diameter. Use for drugs, pharmaceuticals, liquors, tinctures, chromatography, and protein-free filtrations in the clinical laboratory. Medium Fine porosity. Medium flow rate. 5um particle retention.
Description:
12.5cm diameter. Good for coarse precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide, magnesium hydroxide, and more. Coarse porosity. Fast flow rate. 25um particle retention.
Description:
11.0cm diameter. For very fine precipitates such as barium and lead sulfates, stannic and nickel sulfides, and calcium hydroxide. Fine porosity. Slow flow rate. 1um particle retention.
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