Ahlstrom
Explore a range of Ahlstrom filter papers, membranes, and other fiber-based filtration products to support your classroom, laboratory, and research needs.
Ahlstrom™ Glass Microfiber Filter Papers - Grade 161
Ahlstrom Grade 161 is a binder-free microfiber glass filter that offers finer particle retention and higher flow rate than traditional analytical papers.
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 617
An extremely fast filtering grade that has a larger particle retention than Grade 631. Grade 617 is a thicker filter paper with higher loading capacity used for rapid filtration of coarse particles and gelatinous precipitates such as in oils and resin solutions.
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 601
Used for clarifying liquids and rapid filtration of coarse precipitates: lead sulfate, lead chromate, calcium oxalate/carbonate.
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 615
Fast flowing filter paper used as an intermediate grade between Grade 617 and 615. It has a rough surface and is used for filtering aluminum, ferric and magnesium hydroxides. It is also found in general construction filtration work and in the filtration of insoluble iron and ore.
Ahlstrom-Munksjo Pleated (Fluted) Filter Paper, Grade 509
Ahlstrom offers a full range of standard pleated grades that meet your needs from grades with rapid flow rates for filtration of viscous materials to grades with tight matrices for removal of fine precipitates.
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 631
A medium speed grade used for the filtration of coarse particles and gelatinous precipitates such as ferric aluminum and magnesium hydroxides. It is also used in air monitoring and gas filtration when high flow rate is needed.
Ahlstrom™ Glass Microfiber Filter Papers - Grade 111
For general purpose use and atmospheric and water pollution monitoring
Ahlstrom-Munksjo Qualitative Non Wet Strengthened Filter Paper, Grade 237
This grade has superior absorbency and offers excellent performance when used as a sample carrier. The extra thickness gives higher wet strength and loading capacity, enabling more precipitate to be held without clogging the filter.
Ahlstrom-Munksjo Chromatography, Electrophoresis and Blotting Paper, Grade 222
Offers extremely high flow and is recommended for both electrophoresis of large molecules and as a blotter to complete the blotting sandwich in gel transfer applications.
Ahlstrom™ Glass Microfiber Filter Papers - Grade 151
For retention comparable to membrane filters while providing higher flow and loading capacity
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 610
Slow flowing filter paper designated to retain fine particles encountered in qualitative analysis. Widely used for water analysis, biological products and fine precipitates such as cold-precipitate barium sulfate. It is also used in Buchner funnels and to clarify cloudy suspensions.
Ahlstrom-Munksjo Standard Glass Microfiber Filter Papers, Grade 141
Glass microfiber filter recommended for pre-filtration of membrane filters and is also used in combination with Grade 121 as a highly efficient protective and retentive grade density pre-filter for membrane filters.
Ahlstrom-Munksjo RNA/DNA Blotting Papers, Grade 237
This grade has superior absorbency and offers excellent performance when used as a sample carrier. The extra thickness gives higher wet strength and loading capacity, enabling more precipitate to be held without clogging the filter.
Ahlstrom-Munksjo Chromatography, Electrophoresis and Blotting Paper, Grade 238
Medium thick paper is recommended for general chromatography application. Also ideal for use as wicks in protein or nucleic acid blotting to provide a uniform flow or buffer through the gel to transfer membrane in a blotting sandwich.
Ahlstrom-Munksjo Standard Non Wet-Strengthened Qualitative Filter Paper, Grade 642
A medium speed grade used in general laboratory applications to retain particles above 2 μm in size. It is also used in agricultural and environmental laboratories for plant growth trials, soil testing and air analysis for monitoring specific contaminants.