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  • Qualitative filter papers: Made of refined pulp and cotton linters with more than 95% alpha cellulose content. The ash content of these filter papers is < 0.1% and they are essentially used for qualitative analysis. Sartorius offers two categories of qualitative filter paper: those that are wet…

  • Quantitative filter papers: Ashless quantitative filter papers are made of refined pulp and cotton linters with over 95% alpha-cellulose content. These filter papers are guaranteed to be free of any residual acids and have an ash content of

  • …retention of all Whatman cellulose filter papers from Cytiva . Ashless: 0.007% ash maximum for Grades 40 to 44. These are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman quantitative filters from Cytiva are designed for gravimetric…

  • Ahlstrom’s qualitative grades of filter paper are, by definition, 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…

  • …Qualitative Filter Papers are made of 100% cotton linter cellulose. Primarily used for clarifying and removing precipitates (ppt) and preparation for quantitative analysis. These papers can be used over a pH range from 0-12 and a maximum temperature of 120°C. Ash content of 0.1%. Papers have…

  • Quantitative cellulose filter papers are primarily used in gravimetric analysis procedures and perform separations by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media family is also widely used in methods to prepare samples for further…

  • …Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air. Aside from Grade 41 environmental pollution papers, Whatman quantitative paper comes in a variety of particle…

  • Advantec Quantitative Ashless Filter Papers are made from the highest quality alpha cotton cellulose. One critical step in the manufacturing process of these filter papers is acid washing. All grades are double acid washed in hydrochloric then hydrofluoric acid to reduce levels of SiO2, CaO, and…

  • …of Grade 113 and suitable for coarse or gelatinous precipitates. Smooth surface for easy recovery of precipitates. These extremely strong filter papers have a high wet strength due to the addition of a small quantity of chemically stable resin. Normal qualitative applications will not introduce…

  • filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. Grade 1: 11 µm The most widely used filter paper for…

  • Buchner Funnel Filter Paper Disks

    Bel-Art - SP Scienceware

    filter plate. The fixed plate models can be used for coarse filtration or with a cloth or paper filter. A removable filter plate allows easier cleaning and precious metals recovery. Available with fixed or removable Fritware® porous filter plate for direct filtering or to support filter paper or…

  • 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. This grade quickly retains the finest particles at high flow rates.

  • Qualitative filter grades are used in basic qualitative analysis and are available as filter discs, sheets and folded filters. These papers maintain consistently high quality due to tightly controlled manufacturer parameters which ensure dependable sample filtration results, lot after lot year after…

  • filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. Grade 4: 20-25 µm Extremely fast filtering

  • …Grade 42. Ashless: 0.007% ash maximum for Grades 40 to 44. These are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman quantitative filters from Cytiva are designed for gravimetric analysis and the preparation of samples for…

  • Designed for general qualitative laboratory work Medium filtering speed; 6 µm particle retention Medium retentivity, which retains medium crystalline precipitates such as aluminum phosphates, barium carbonate and lead chromate Thickness approximately 0.15 mm 6 µm pore size

  • A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing. These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate…

  • filter papers perform separation by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media is widely used in methods requiring the determination and identification of particulate in both liquids and gas. Also, this natural fiber filter paper is…

  • …determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. Grade 1: 11 µm The most widely used filter paper for routine applications with medium retention and…

  • Ahlstrom offers a full range of specially designed filter paper for use in the sugar industry. Ahlstrom 8613 has a smooth black finish designed for use in applications requiring visual examination of particles. Ahlstrom 613 and 615 are particularly well suited for general laboratory filtration…

  • Filter Paper

    GSC International, Inc.

    Our general-purpose filter papers are available in a variety of diameters. Sold in boxes of 100 pieces of paper. PRODUCT WARNINGS Our products are not toys . Use in a laboratory or educational setting only. Not for children 13 and under.

  • Ahlstrom’s qualitative grades of filter paper are, by definition, 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…

  • Designed for general qualitative laboratory work Fast filtering speed; 25um particle retention Low retentivity, which retains coarse or gelatinous precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide and magnesium hydroxide Creped surface; thickness approximately…

  • White filter paper with printed green lines for optical assessment. White filter paper with printed green lines for optical assessment. For routine investigations of foreign substances in a variety of sample types.

  • …particles to 1.0 µm Extremely high flow rate; filtration takes place both vertically and laterally through the filters High loading capacity, which continues to filter efficiently for a greater extended period Highly resistant to chemical attack; absence of binders ensures that…

  • Cytiva Whatman Grade 72 activated carbon air filter paper is designed for air pollution monitoring of radioactive iodine in medical and nuclear installations. High-quality composite cellulose/glass filter paper Loaded with activated carbon for radioactive iodine absorption Suitable…

  • …maximum. These filters are acid-hardened to give high wet strength and chemical resistance with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical filtration procedures. These are the supreme quantitative filter papers featuring high wet…

  • …This fastest ashless filter paper is also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates. This filter is also available in a disposable filter funnel. This is a convenient, disposable 47 mm filter funnel with a 250…

  • …cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. Grade 4: 25 µm Extremely fast filtering with…

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