Ahlstrom

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Are you looking for a solid and concrete partner for laboratory filtration?

Ahlstrom is the answer. Highly reliable and readily available.

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  • Glass Microfiber Filters, Ahlstrom 161

    Ahlstrom

    …is required. Applications for Ahlstrom glass microfiber filters include environmental analysis for water, wastewater, testing of soils, air pollution and monitoring, research and process biochemistry, and gravimetric analysis involving ignition of samples. Ahlstrom glass microfiber filters are also…

  • ReliaPrep™ PTFE Syringe Filters

    Ahlstrom

    Syringe filters for convenient filtration of small sample sizes through membranes. PTFE membranes are permanently hydrophobic and resistant to solvents, acids, and bases.

  • Quantitative Filter Papers, Ahlstrom 74 (Ashless)

    Ahlstrom

    …for use in analysis involving instrumental techniques. Ahlstrom 74: 2.0µm – Medium Speed This grade has medium flow rate and good particle retention and is the most commonly used acidwashed filter. Ahlstrom 74 covers a wide range of general ashless filtration applications.…

  • Qualitative Filter Papers, Ahlstrom 610

    Ahlstrom

    Ahlstrom 610: 1.5µm – Slow Speed This grade is a slow flowing filter designed to retain fine particles encountered in qualitative analysis. Ahlstrom 610 is widely used for water analysis, biological products and fine precipitates such as coldprecipitated barium sulfate. Ahlstrom

  • ReliaDisc™ Nylon (Polyamide) Membrane Filtration Media

    Ahlstrom

    Nylon (Polyamide) membranes are hydrophilic and widely used in both aqueous and organic solvent filtration applications.They are best used in a pH range of 3-14 and at an operating temperature below 100 degrees Celsius.

  • Qualitative Filter Papers, Ahlstrom 601

    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…

  • Glass Microfiber Filters, Ahlstrom 151

    Ahlstrom

    Ahlstrom 151 has retention comparable to membrane filter while providing higher flow and loading capacity. Ahlstrom 151 is recommended for filtering fine precipitated proteins. In the filtration of nucleic acids and difficult biochemical solutions, Ahlstrom 151 is used in combination with Ahlstrom

  • Qualitative Filter Papers, Ahlstrom 642

    Ahlstrom

    …work or when wet handling is required. Ahlstrom 642: 2µm – Medium Speed This grade has finer particle retention than Ahlstrom 601 but with slightly lower filtration speed. Ahlstrom 642 also has higher absorption than Ahlstrom 601. It is used in general laboratory applications…

  • Quantitative Filter Papers, Ahlstrom 75 (Ashless)

    Ahlstrom

    …resistance to strong acid and alkali. Ahlstrom 75: 2.0µm – Medium Speed This grade has medium flow rate and good particle retention and is most commonly used for applications requiring high chemical resistance to strong acid and alkali. Ahlstrom 75 is often used for filtering trace…

  • Qualitative Filter Papers, Ahlstrom 617

    Ahlstrom

    …grades for use in vacuum work or when wet handling is required. Ahlstrom 617: 35µm – Fast Speed This is an extremely fast filtering grade and has a larger particle retention than Ahlstrom 631. Ahlstrom 617, a thicker filter paper with higher loading capacity, is used for…

  • Qualitative Filter Paper Circles, Ahlstrom 950

    Ahlstrom

    …that still requires high purity and consistent performance. Ahlstrom 950: 2.0µm – Slow Speed This slow flow rate grade with very good retention is used in the filtration of fine precipitates and super phosphates. Ahlstrom 950 is also recommended for boiler water analysis applications…

  • Qualitative Filter Papers, Ahlstrom 609

    Ahlstrom

    …folded applications. We do not recommend these grades for use in vacuum work or when wet handling is required. Ahlstrom 609: 4µm – Medium Speed This grade is an evolution of Ahlstrom 613 for use in the beer industry. This is a filter paper with an extremely low iron and nitrogen content for…

  • Qualitative Filter Papers, Ahlstrom 631

    Ahlstrom

    …use in vacuum work or when wet handling is required. Ahlstrom 631: 10µm – Medium Speed This grade is used for the filtration of coarse particles and gelatinous precipitates such as ferric aluminum and magnesium hydroxides. Ahlstrom 631 is used in air monitoring and gas filtration when…

  • Glass Microfiber Filters, Ahlstrom 131

    Ahlstrom

    …without premature clogging. Ahlstrom 131: 1.0µm – Medium Speed This standard grade found in many environmental applications offers slightly more retention than Ahlstrom 111 with slightly lower filtration speed and loading capacity. Ahlstrom 131 is recommended for the…

  • Qualitative Filter Papers

    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…

  • Quantitative Filter Papers, Ahlstrom 55 (Ashless)

    Ahlstrom

    …strong acid and alkali. Ahlstrom 55: 15µm – Fast Speed This is a fast filtering grade for gravimetric analysis of coarse particles and gelatinous precipitates (i.e.: aluminum and zirconium hydroxides) in acid and alkali solutions. Ahlstrom 55 is also used in air and…

  • Quantitative Filter Papers, Ahlstrom 94 (Ashless)

    Ahlstrom

    Ahlstrom 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, reverse-osmosis water and are further treated with dilute acid to…

  • Glass Microfiber Filters, Ahlstrom 141

    Ahlstrom

    …is required. Applications for Ahlstrom glass microfiber filters include environmental analysis for water, wastewater, testing of soils, air pollution and monitoring, research and process biochemistry, and gravimetric analysis involving ignition of samples. Ahlstrom glass microfiber filters are also…

  • Quantitative Filter Papers, Ahlstrom 95 (Ashless)

    Ahlstrom

    Ahlstrom 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, reverse-osmosis water and are further treated with dilute acid to…

  • Quantitative Filter Papers, Ahlstrom 54 (Ashless)

    Ahlstrom

    …involving instrumental techniques. Ahlstrom 54: 10µm – Fast Speed This is a fast filtering grade for rapid filtration of coarse particles and gelatinous precipitates such as iron, zirconium and aluminum hydroxides, and cobalt sulfide. Ahlstrom 54 is also used in air pollution…

  • Glass Microfiber Filters, Ahlstrom 111

    Ahlstrom

    …is required. Applications for Ahlstrom glass microfiber filters include environmental analysis for water, wastewater, testing of soils, air pollution and monitoring, research and process biochemistry, and gravimetric analysis involving ignition of samples. Ahlstrom glass microfiber filters are also…

  • Qualitative Filter Papers, Ahlstrom 613

    Ahlstrom

    …recommend these grades for use in vacuum work or when wet handling is required. Ahlstrom 613: 6µm – Medium Speed This is a strong filter paper with a medium flow rate and retention. Ahlstrom 613 is commonly used in student laboratories. This strong general-purpose filter is…

  • Glass Microfiber Filters, Ahlstrom 121

    Ahlstrom

    Ahlstrom 121: 1.0µm – Medium Speed This very thick grade offers finer particle retention than Ahlstrom 111 with high wet strength and loading capacity. Ahlstrom 121 is recommended for the clarification of liquid suspensions loaded with fine particulates. Ahlstrom 121 is…

  • Pre-Weighed Filters

    Ahlstrom

    Ahlstrom pre-weighed and pre-washed filters can save time and resources in your laboratory by providing a convenient solution for your suspended solids testing. Each filter is pre-washed and pre-weighed, following the STM 2540 procedures, and provided in an aluminum pan with the identified weight…

  • Reliadisc™ Gridded Microbiological Monitor Membranes

    Ahlstrom

    Ahlstrom offers gridded sterile membranes packed individually for use in colony counting, particle testing, and microscopy. These cellulose nitrate (CN) membranes are available in a standard 47 mm diameter size. Each membrane is individually packaged and 760219 squares are in a strip that can…

  • Qualitative Filter Papers, Grade 961, Wet-Strengthened

    Ahlstrom

    …purity and consistent performance. Ahlstrom 961: 40µm – Fast Speed This fast filtering grade, with extremely high loading capacity, is recommended for the filtration of coarse and gelatinous precipitates. The creped surface of Ahlstrom 961 also offers higher surface area to…

  • GenCollect™ Specimen Collection and Dried Blood Spot Cards

    Ahlstrom

    Simple Collection - Easy Extraction - Reliable Analysis Ahlstrom GenCollect™ card is an easy and cost effective way to collect and store biosamples at ambient temperature. They are suited for a wide range of applications including: Genotyping Forensics Paternity tests …

  • ReliaPrep™ Glass Fiber Prefilters

    Ahlstrom

    Syringe filters for convenient filtration of small sample sizes through membranes. This glass microfiber syringe filter can be used as a pre-filter to remove interfering particulates before filtering a sample through a membrane.

  • Qualitative Filter Papers, Ahlstrom 631

    Ahlstrom

  • ReliaDisc™ Cellulose Acetate Membrane Filtration Media

    Ahlstrom

    Cellulose acetate membranes are hydrophilic membranes that offer excellent flow rates. They are low protein-binding and provide superior chemical resistance to alcohols and oils. They are best used at a pH of 4-8 and an operating temperature below 180 degrees Celsius.

  • AutoCollect™ Specimen Collection Cards

    Ahlstrom

    Ahlstrom's AutoCollect™ cards are designed for use in automated high throughput punching and sample preparation applications. This rigid card has 4 circles printed on the TFN collection area with accurate and consistent positioning for sampling of whole blood, saliva, or oher…

  • BioSample TFN Specimen Collection Cards

    Ahlstrom

    Ahlstrom's BioSample TFN cards are intended for the collection of small volume biological samples that will be used for protein and peptide analysis. BioSample TFN cards are made of high purity cellulose and provide a rapid and safe way to collect, transport, and store biological samples,…

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