Chemistry Filter Paper

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...

Xenosep Technologies offers the Xenomax® 1664A Solid Phase Extraction Filters, an essential tool in the purification and separation of complex mixtures. These filters aid in the extraction of particular components from liquid samples, providing clear, reliable results necessary for further analysis....

Advantec Glass Fiber Filters are depth filters made of pure borosilicate glass microfibers. These grades are thicker and have a high loading capacity and typically faster flow times. Recommended for filtering viscous fluids such as proteinaceous solutions and gels and as prefilter to extend membrane...

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...

High retentivity, perfect for general laboratory filtering and qualitative analysis 10µL (micron) pore size Medium Speed (85 gsm) Pack of 100 circles Premium quality 9cm diameter filter paper for use in labs. Medium speed. Pore size: 10µL. Pack of 100 circles.

Ahlstrom offers three microfiber glass grades for use in the toxicity characteristic leaching procedure (TCLP) as described in EPA Method 1311. Grade 193 – Low Metal TCLP Filter This grade has similar performance properties to Grade 151 and is made with acid-treated borosilicate glass microfibers...

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...

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...

HIGH RETENTIVITY || High retentivity, perfect for general laboratory filtering and qualitative analysis FILTER SIZE || 15cm diameter PORE SIZE || 10µL (micron) pore size FILTERING SPEED || Medium Speed (85 gsm) 100PK || Pack of 100 circles Premium quality 15cm diameter filter paper for use in labs....

Advantec Glass Fiber Filters are depth filters made of pure borosilicate glass microfibers. Highly resistant to chemical attack and biologically inert. Binder-free and thermostable to 500°C. These grades are recommended primarily used in environmental air monitoring applications. Grade GB100R...

Pure PTFE (Polytetrafluoroethylene) fibers are sintered to create a unique depth-type filter. These PTFE filters offer superior handling and minimal fiber slough-off compared to glass and quartz filters. Naturally hydrophobic, the media will separate aqueous from non-aqueous phases of mixtures....

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...

Ahlstrom manufactures high quality analytical filter papers for use in specialty end use applications. These custom designed qualitative grades are manufactured from top quality cotton linters using ultra-pure, reverse-osmosis water. Ahlstrom specialty analytical filter papers include pleated and...

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...

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

Advantec Glass Fiber Filters are depth filters made of pure borosilicate glass microfibers. Organic binder gives these filters higher wet strength and lower fiber release compared to binder-free grades. Thermostable to 120°C. Recommended for high pressure filtration, applications requiring wet...

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...

Ideal for precise scientific applications, the Filter Paper #615 24cm ensures reliable and consistent filtration of both organic and inorganic substances. With a size of 24cm, it is sufficiently large for accommodating substantial volumes of liquids, lending itself to numerous laboratory...

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’s pre-pleated grades can save valuable time and maximize the efficiency of...

Ahlstrom MK360 is a binder-free grade made of extremely pure micro-quartz fibers and conditioned by high temperature pre-heating. MK360 is useful for testing hot "stack" gases as the quartz fibers can withstand temperatures up to 900°C. In addition, micro-quartz is used in liquid filtration when the...

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...

Ahlstrom-Munksjo presents an exceptional addition to your laboratory necessities with its 'Grade 961 24CM circles'. This premium filter paper is meticulously designed to provide optimal performance, ensuring precise, consistent results in various scientific filtering processes. Constructed from...

Suitable for routine gravimetric analysis and typical preparation of samples for use in analysis involving instrumental techniques. Low ash grades have intermediate ash content between qualitative grades and ashless grades. Grade 392 is medium to slowly filtering and used for fast filtration of fine...