Made of pure cellulose treated with hydrochloric and hydrofluoric acid, filter paper is quantitative paper used for straining with fast flow rates and good retention. It creates 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 routine laboratory work, ranging from coarse to fine filtration of particulates.
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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Filter papers for wine laboratories
Supplier: Ahlstrom-Munksjö
These filter papers are suitable for use in wine laboratories.
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High purity qualitative filter paper
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.
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Grade 0858 seed test paper, Whatman™
Supplier: Whatman products (Cytiva)
Grained, with medium fast flow rate and medium retention. A universal filter paper, used for the filtration of extracts, oils, beer, syrups etc.; also applied in filter presses or for the aspiration of liquids.
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Qualitative filter papers, technical, smooth, grade 100/N
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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Filter paper for special applications
Supplier: Ahlstrom-Munksjö
These filter papers for suitable for special applications.
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Qualitative filter papers, technical, smooth, grade 6
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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General purpose qualitative filter papers
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications.
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Ashless quantitative filter papers
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö manufactures a series of extremely high purity, acid washed filter papers designed for use in analytical and gravimetric analysis. The quantitative grades are manufactured from top quality cotton linters using ultra-pure, deionised water and are further treated with dilute acid to remove any remaining organic and inorganic impurities. All quantitative grades are manufactured in a strictly controlled environment that ensures high uniformity and high purity from filter to filter.
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Quantitative filter papers, hardened ashless grades, grade 391
Supplier: Ahlstrom-Munksjö
These quantitative ashless hardened filter papers are recommended for use where a high purity is required for quantitative analysis.
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Qualitative filter papers, technical, smooth, grade 3 w
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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Quantitative filter papers
Supplier: Sartorius
These filter papers are made of 100% cotton linters. They are guaranteed to be free of any residual acids and they have an extremely low percentage of ash content. As a result, these filters are virtually ash-free. All Sartorius ashless filter papers are characterised by high wet strength and high purity and are therefore especially suitable for quantitative analysis, Büchner funnels, pressure or vacuum filtration.
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Industrial Filter Papers
Supplier: Ahlstrom-Munksjö
The following filter papers fulfill specific technical requirements corresponding to the requirements mentioned overleaf. Embossed filter papers have a larger surface area and, therefore, correspondingly shorter filtration times. They show a very homogenous and fine pore structure.
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Qualitative filter papers, technical, smooth, grade 3 hw
Supplier: Sartorius
These smooth filter papers are made of refined pulp and linters with more than 95% alpha-cellulose content. The ash content of these filter papers is between 0,1 and 0,15%.
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Seed testing papers, grade 181, Whatman™
Supplier: Whatman products (Cytiva)
Grade 181 support filter for seed tests using copenhagen tank system.
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VWR® Phase Separating Paper, Grade 511
Supplier: VWR Collection
Hydrophobic filter paper used for separation of aqueous solutions from organic solutions.
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High purity hardened qualitative filter paper
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions. High Purity hardened filter papers grades 1288 to 1291 are also produced from cellulose with an alpha content of nearly 100% resulting in an ash content of <0,1%.
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Ashless hardened quantitative filter paper
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö manufactures a series of extremely high purity, acid washed filter papers designed for use in analytical and gravimetric analysis. The quantitative grades are manufactured from top quality cotton linters using ultra-pure, deionised water and are further treated with dilute acid to remove any remaining organic and inorganic impurities. All quantitative grades are manufactured in a strictly controlled environment that ensures high uniformity and high purity from filter to filter.
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High purity qualitative filter paper
Supplier: Ahlstrom-Munksjö
These qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers cover a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Wet-strengthened grades contain a reinforcement agent that increases their resistance to rupture when wet, such as in vacuum filtration, and their resistance when filtering acidic solutions.
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Quantitative filter papers, hardened ashless grades, grade 392
Supplier: Ahlstrom-Munksjö
These quantitative ashless hardened filter papers are recommended for use where a high purity is required for quantitative analysis.
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Filter papers for soil analysis
Supplier: Ahlstrom-Munksjö
These papers are used to determine the presence of trace elements and nutrients in soil samples to optimise plant growth.
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Phase separating paper, grade 1PS
Supplier: Whatman products (Cytiva)
1PS phase-separating paper is a hydrophobic filter for routine solvent extraction. Within seconds it retains aqueous phases, while solvent phases flow through.
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Filter papers for breweries
Supplier: Ahlstrom-Munksjö
Ahlstrom-Munksjö offers filters for malt analysis and malt filtration according to MEBAK, ASBC and EBC standards.
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Diatomaceous earth filter papers, grade 470
Supplier: Sartorius
Grade 470 papers are made of cellulose and diatomaceous earth and offer a much better separating capability than pure cellulose papers at the same rate of filtration.
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Cellulose chromatography and blotting paper roll, Whatman™
Supplier: Whatman products (Cytiva)
Cellulose Chromatography and Blotting Paper Roll contains cotton linter filter sheets for electrophoresis and amino acid chromatography.
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Industrial filter boards, Munktell
Supplier: Ahlstrom-Munksjö
Boards which by their filtration properties are keyed to specific applications as well as to industrial filtration processes.
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Ashless filter aids, Whatman™
Supplier: Whatman products (Cytiva)
Ashless filter aids enhance filtration speed by coagulating precipitates or suspensions to form a thick retentive ‘prefilter’ layer on top of normal filter paper.
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Paper boards for filtration and absorption of liquids
Supplier: Sartorius
These paper boards are used for the filtration of cooking and transformer oils, galvanic baths and as base paper for further impregnation with certain reagents. They are made of refined pulp or cotton linters.
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Seed testing papers, pleated paper
Supplier: Sartorius
These papers satisfy the requirements for the determination of germination capability according to ISTA (International Seed Testing Association) and are ideal for ensuring optimal moisture content for the most diverse types of seeds and germination forms.
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Seed testing papers, Munktell
Supplier: Ahlstrom-Munksjö
Seed Testing Papers are widely used by seed testing institutes and others for germination capacity testing and for health tests e.g. Jacobsen (Copenhagen tank), on top of paper and osmosis test.