Munktell Filtrak™ Grade 1F Qualitative High Purity Lab Filter Papers
For fast filtration of fine precipitates such as calcium oxalate, magnesium ammonium phosphate, coarser forms of barium sulfate.
Munktell Filtrak™ Grade 3 Qualitative High Purity Lab Filter Papers
For coarse and voluminous precipitates such as iron- aluminum- and chromium hydroxide; Si-determination in steel and pig iron analysis.
Munktell Filtrak™ Grade MGA Binder-Free Micro-Glass Fiber Filters
For general laboratory filtration, clarification of buffer and reagent solutions.
Munktell Filtrak™ Munktell Grade 1600 Filter Paper
Prepare laboratory sheets for pulp testing. Munktell Filtrak™ Munktell Grade 1600 Filter Paper is often used when preparing laboratory sheets of most forms of pulp for physical testing in accordance with ISO Test Method, 5269-1.
Fisherbrand™ Grade 122 Cellulose General Purpose Filter Paper
Very fast filtration velocity. Fisherbrand™ Grade 122 Cellulose General Purpose Filter Paper is used for all general works in laboratories.
Munktell Filtrak™ Grade 1600 Pulp Testing Papers
Grade 1600 Test Paper is often used when preparing laboratory sheets of most forms of pulp for physical testing in accordance with ISO Test Method 5269-1: 2005, Part 1.
Munktell Filtrak™ Grade 00R Quantitative Ashless Filter Papers
Recommended for use where a high purity is required for quantitative analysis.
Macherey-Nagel™ MN 615 Grade Round Format Cellulose Qualitative Filter Paper
Use for a wide range of general laboratory filtrations. MN 615 Grade Round Format Cellulose Qualitative Filter Paper provides medium fast filtration.
Munktell Filtrak™ Grade 1600 Pulp Testing Filter Paper
For physical testing in accordance with ISO Test Method 5269-1: 2005, Part 1
Macherey-Nagel™ MN 617 Grade Filter Papers, Round
Suited for general filtration applications, including coarse-crystalline qualitative analysis. Macherey-Nagel™ MN 617 Grade Filter Papers, Round are smooth, soft filter papers with fast filtration speed. The average ash content is about 0.1%, the amount of α-cellulose is about 95%.
Munktell Filtrak™ Grade 00H Quantitative Ashless Filter Papers
Recommended for use where a high purity is required for quantitative analysis.
Munktell Filtrak™ Grade 5 Qualitative High Purity Lab Filter Papers
For coarse and voluminous precipitates such as iron-aluminum- and chromium hydroxide; Si-determination in steel and pig iron analysis.
Cytiva Whatman™ Qualitative Filter Paper: Grade 1 Circles
Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Circles are widely used standard grade filter papers for routine applications with medium retention and flow rates.
Cytiva Whatman™ Grade 44 Quantitative Filter Paper
Reduces overall ash content and the amount of time required for filtration. Whatman™ Grade 44 Quantitative Filter Paper provides faster gravimetric analysis with filter thinner material.
Cytiva Grade GF 10 Glass Microfiber Filters with Binder
Strengthened with an organic binder to provide high mechanical stability. Whatman™ Glass Microfiber Filters with Binder, Grade GF 10 can be used for various applications from fine and coarse particle analysis to prefilter membranes for crop protection residues.
Cytiva Grade 597L Qualitative Filter Paper
Suitable for nitrate determination in foodstuffs. Whatman™ Grade 597L Qualitative Filter Paper is a cellulose filter paper with low fat content.
Cytiva Whatman™ Quantitative Filter Papers: Grade 542 Circles
Enables high retention of fine particles in chemically harsh conditions. Whatman™ Quantitative Filter Papers: Grade 542 Circles are well suited for use in capturing fine precipitates in applications such as metal determinations and hydroxide collection.
Cytiva Whatman™ Quantitative Filter Paper: Grade 50 White Smear Tab Sheets
Enables strong retention for very fine crystalline precipitates. Whatman™ Quantitative Filter Paper: Grade 50 White Smear Tab Sheets withstand shredding, wet handling, and precipitate removal by scraping.
Cytiva Whatman™ Grade 54 Quantitative Filter Paper
Supports collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet. Whatman™ Grade 54 Quantitative Filter Paper has a hard, smooth surface to sustain vacuum and suction filtration.
Cytiva Whatman™ Qualitative Filter Paper: Grade 2 Circles
Retains and absorbs more than Grade 1 filters, with a corresponding increase in filtration time. Whatman™ Qualitative Filter Paper: Grade 2 Circles are used for monitoring specific contaminants in the atmosphere and in soil testing.
Sartorius™ Smooth Filter Paper Discs, Grade 3-HW
Use for routine qualitative analyses and technical applications. Sartorius™ Smooth Filter Paper Discs, Grade 3-HW can be used for pressure and vacuum filtration. Ultra-pure filters are available in filter disc format in a variety of diameters.
Munktell Filtrak™ Micro-Glass Fiber Filters
Achieve optimum filtration. Munktell Filtrak™ Micro-Glass Fibers used in Munktell filters are made of 100% borosilicate glass of varying diameters fine-tuned to the particle retention and flow requirements of the grades.
Cytiva Whatman™ Quantitative Filter Paper: Grade 541 Circles
Recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Whatman™ Quantitative Filter Paper: Grade 541 Circles are acid hardened cellulose filters, which reduces ash to an extremely low level.
Cytiva Whatman™ Grade 1575 Wet-Strengthened Qualitative Filter Paper: Circle
Slow filter paper with high wet strength
Munktell Filtrak™ Grade V150 Qualitative Filter Papers
These qualitative filter papers are suited for the medium-fast filtration of coarser precipitates such as lead-, iron- and silver sulfide, alkali carbonates and calcium oxalate.
Munktell Filtrak™ Qualitative Ashless Papers; Circle
Obtain high-quality filtration. Munktell Filtrak™ Qualitative Ashless Papers contain nearly 100% high alpha-cellulose are manufactured under tightly controlled manufacturing conditions to assure lot to lot quality.
Cytiva Whatman™ Soil Analysis Filter Papers
Whatman™ Grade 515 ½ Soil Analysis Filter Paper, Folder are pre-pleated low phosphate papers for the filtration of calcium lactate extracts from soil samples for the determination of phosphorus and potassium.
Sartorius™ Grade 1602/N Creped Surface Qualitative Filter Papers
Well-suited for analytical and technical purposes. Sartorius™ Grade 1602/N Creped Surface Qualitative Filter Papers has a fast flow rate due to its structure.
Cytiva Whatman™ Cellulose Nitrate Membrane Filters
Manufactured under strictly controlled conditions. Whatman™ Cellulose Nitrate Membrane Filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity.
Filter papers are familiar consumables in the laboratory normally used with a conical funnel or similar device for the filtering and retention of solids, particulates and other contaminants from aqueous solutions, suspensions, solvents and other liquids. Filter papers are manufactured from natural cellulose linters or from glass or quartz fibres. They are available in various diameters as pre-cut plain circles, or as discs ready-folded into pleats, quadrants or pyramids for convenience and to maintain optimal, clog-free flow rates. Filter paper is also sold as sheets or rolls that can be cut to size as required.
Filter papers are described either as qualitative or quantitative. Qualitative filter papers are used for general purpose filtration applications where subsequent analytical outcomes are not critical.
Quantitative filter papers (ashless papers), are intended for more exacting analytical work. They are made from low-linting fibres that are typically acid-hardened during their manufacture to give high wet strength and chemical resistance, and are pre-rinsed with demineralised water for extra purity.
Most filter paper is also graded numerically according to pore size, which in turn infers other parameters such as flow rate, retention, thickness, weight, burst strength, and hence their nominal application.
What is filter paper used for?
- General applications in research laboratories, clinics and education
- In the analytical laboratory for removal of precipitants and particulates prior to further analysis or assay
- Industrial applications in foods, beverages, cosmetics and gravimetric analysis of cements, clays, iron and steel products
- Environmental analysis of water, soil or atmospheric samples