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Ahlstrom

  • Grade 1 Qualitative Filter Papers

    GE Healthcare

    A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. These cellulose filters are used in qualitative analytical techniques to determine and…

  • Whatman Quantitative Filter Papers, Ashless, Grade 40

    GE Healthcare

    Whatman Grade 40 high-purity filters from GE Healthcare’s Life Sciences business are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications. High-purity filters contain 0.007% maximum ash content Medium nominal…

  • 934-AH™ Borosilicate Glass Microfiber Filters

    GE Healthcare

    1.5 µm Retention Efficient retention of small size particles to 1.5 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 …

  • Filter Paper, Qualitative Grades

    Thomas®

    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…

  • Ashless Grade 41 Quantitative Filter Papers

    GE Healthcare

    The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides). Ashless: 0.007% ash maximum for Grades 40 to 44. These are very pure filters suitable for a wide range of critical analytical…

  • GF/A Borosilicate Glass Microfiber Filters

    GE Healthcare

    1.6 µm Retention Efficient retention of small size particles to 1.6 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 …

  • GF/F Borosilicate Glass Microfiber Filters

    GE Healthcare

    Efficient retention of small size particles to 0.7 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 greatly extended period Highly resistant to chemical…

  • Grade GF/C Glass Microfiber Filters

    GE Healthcare

    Grade GF/C is the standard filter in many parts of the world for the collection of suspended solids in potable water and natural and industrial wastes. Grade GF/C: 1.2 µm Combines fine particle retention with good flow rate. Fast and efficient clarification of aqueous liquids…

  • 934-AH™ RTU Glass Microfiber Filters

    GE Healthcare

    The filter you trust just got better Whatman 934-AH RTU , one of the most widely used filters for Total Suspended Solids Analysis, is now available in a time-saving, Ready-To-Use ( RTU ) format. The 934-AH RTU contains the trusted binder-free, high quality borosilicate glass…

  • Grade 934-Ah Glass Microfiber Filters

    Thomas®

    Depth filtration glass micro fiber 934-AH® - Fine porosity, fast flow rate, with a 1.5 µm size particle retention. This material is the standard for volatile suspended solids content and related measurements (Standard Methods 2540D and EPA Method 160.2). Also widely used in cell harvesting…

  • Grade 4 Qualitative Filter Papers

    GE Healthcare

    A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical. These cellulose filters are used in qualitative analytical techniques to determine and identify materials. Prepleated qualitative filters are also…

  • Qualitative Filter Paper

    Advantec MFS

    Advantec 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%.…

  • Filter Paper, Qualitative Grade

    Thomas®

    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

  • Whatman Grade 1 Qualitative Filter Papers

    GE Healthcare

    A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids. A widely used standard grade filter paper for routine applications with medium retention and flow…

  • Ashless Grade 42 Quantitative Filter Papers

    GE Healthcare

    A world standard for critical gravimetric analysis with the finest particle retention of all Whatman cellulose filter papers from GE Healthcare. Ashless: 0.007% ash maximum for Grades 40 to 44. These are very pure filters suitable for a wide range of critical analytical filtration…

  • ProWeigh Double for TSS/VSS

    Environmental Express

    The interpretations by various auditors of the requirements of prepared filters for TSS and VSS analysis often differ from one regulatory body to the next. ProWeigh® Double filters from Environmental Express strictly document ALL preparation steps outlined in Standard Methods 2540D and E for…

  • Glass Fiber Filters

    Sartorius

    Depth filters with high particle loading capacity. Made of 100% borosilicate. Temperature resistant up to 500 °C. Typically placed directly on top of other membrane filters to act as a prefilter; or may be used to filter solutions directly.

  • Qualitative Filter Papers, Ahlstrom 613

    Ahlstrom

    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…

  • ValuSep® 1664A Solid Phase Extraction Filters

    Applied Separations

    ValuSep® Solid Phase Extraction (SPE) filters for EPA Method 1664A are designed to provide high recovery and low blank values in Horizon® SPE-DEX® and SPE manifold EPA Method 1664A applications. Each SPE filter consists of glass fibers which have been chemically modified so they retain…

  • Glass Microfiber Filters, Ahlstrom 161

    Ahlstrom

    Ahlstrom offers a full range of glass microfiber filters manufactured from 100% pure borosilicate glass. Because of their intrinsic properties, glass microfiber filters have wide applications in many areas of laboratory analysis, especially when fine filtration and high loading capacity is…

  • Qualitative Cellulose Filter Papers

    Thomas®

    Qualitative cellulose 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…

  • Ashless Grade 44 Quantitative Filter Papers

    GE Healthcare

    Grade 44 is a thin version of Grade 42 that retains very fine particles but with lower ash weight per sample and almost twice the flow rate of 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…

  • Hardened Low Ash Grade 50 Quantitative Filter Papers

    GE Healthcare

    The thinnest of all Whatman filter papers with hardened and highly glazed surface, offering slow flow rate. Hardened low ash: 0.015% ash maximum. These filters are treated with a strong acid to remove trace metals and produce high wet strength and chemical resistance. Thesy are particularly…

  • Hydrophilic Mixed Cellulose Esters

    Thomas®

    I.W. Tremont offers a diverse product line of high quality membrane filters available in a variety of materials, diameters and pore sizes and suitable for a wide range of applications including cell retention, In Vitro Diagnostics, particle collection, clarification and sterile filtration of…

  • Quantitative Cellulose Filter Papers

    Thomas®

    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…

  • Quantitative filter paper

    Sartorius

    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

  • 1289 Grade Qualitative Filter Paper

    Munktell

    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…

  • Grade 2 Qualitative Filter Papers

    GE Healthcare

    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…

  • Whatman Grade 3 Qualitative Filter Papers

    GE Healthcare

    A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels. A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in büchner funnels. Prepleated qualitative filters are…

  • Nylaflo™ Membrane Disc Filters

    Pall Life Sciences

    A Highly Versatile Laboratory Membrane Filter Excellent chemical compatibility with esters, bases, and alcohols Naturally hydrophilic Available in 0.2 and 0.45 µm pore sizes, in diameters ranging from 13 to 142 mm HPLC certified. Provides assurance that the filter will not…

  • Filter Paper, Qualitative Grade

    Thomas®

    Designed for very fine precipitates Slow filtering speed; 1 µm particle retention High retentivity, which retains very fine crystalline precipitates such as cuprous oxide, lead sulfate, barium sulfate and manganese carbonate Thickness approximately 0.20 mm, 1.5 µm pore size

  • Grade C Glass Microfiber Filters

    Thomas®

    Depth Filtration Glass Micro Fiber GRADE C - Fine porosity, fast flow rate, with a 1.2 µm size particle retention. Primarily used for RIA procedures and harvesting lymphocytes. Binderless borosilicate glass microfiber. Particle retention: 1.20 µm Filtration speed: 25 seconds Thickness: 0.28…

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