FILTER PAPER

Cellulose thimbles are high quality sample reservoirs for quality control, research, and analytical applications where solvent extraction of solids and semi-solids must be carried out. The use of a Soxhlet extractor provides a safe method of extraction...

Ahlstrom 54: 10 m - 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 testing to...

Ahlstrom 94: 1.5 m - Slow Speed. This is an extremely fine retention filter for critical gravimetric analysis of very fine particles such as barium and lead sulfates, stannic and nickel sulfide, calcium oxalate and calcium fluoride. Ashless Grades (Ash 0...

Grade 111: 1.2 µm - Fast speed. This grade offers fine particle retention with high filtration speed and good loading capacity. Grade 111 is used in general laboratory filtration including atmospheric and water pollution monitoring such as intake...

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

Grade 131: 1.0 µm - Medium speed. This standard grade found in many environmental applications offers slightly more retention than Grade 111 with slightly lower filtration speed and loading capacity. Grade 131 is recommended for the collection of...

Grade 141: 3.1 µm - Fast speed. This grade offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Grade 141 is particularly recommended for pre-filtration of membrane filters and...

Grade 151: 0.7 µm - Slow speed. This high performance grade is designed to retain extremely fine particles down to 0.7 µm. Grade 151 has retention comparable to membrane filters while providing higher flow and loading capacity. Grade 151 is...

Grade 161: 1.1 µm - Medium speed. This popular grade offers finer particle retention and higher flow rate than traditional analytical filter papers. Grade 161 is used in general laboratory applications, cell harvesting, liquid scintillation counting...

Grade 55: 15 µm - 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. This grade is also used in air and...

Grade 75: 2.0 µm - 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 alkali. This grade is often used for filtering trace elements,...

Grade 95: 1.5 µm- Slow Speed. This is an extremely fine retention filter for critical gravimetric analysis and metal determination of very fine particles such as barium and lead sulfates, stannic and nickel sulfide, calcium oxalate and calcium...

Grade 542: 2 µm Pleated (Fluted) Filter Paper. 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...

Ahlstrom Grade 237: 3 m - Medium Speed (non wet-strengthened). This high absorbency grade is twice as thick as grade 642 with similar particle retention. The superior absorbency offers excellent performance when used as a sample carrier. The extra...

Ahlstrom Grade 601: 2.5 m - Medium Speed (non wet-strengthened). This grade covers a wide range of laboratory applications and is used for clarifying liquids and for rapid filtration of coarser precipitates such as lead sulfate, lead chromate, calcium...

Ahlstrom Grade 609: 4 m - Medium Speed (non wet-strengthened). 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 the analysis of protein in beer.Standard...

Ahlstrom Grade 610: 1.5 m - Slow Speed (non wet-strengthened). 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...

Ahlstrom Grade 613: 6 m - Medium Speed (non wet-strengthened). 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 also useful in Buchner...

Ahlstrom Grade 615: 25 m - Fast Speed (non wet-strengthened). This fast filtering grade is an intermediate grade between Ahlstrom 617 and Ahlstrom 631. Ahlstrom 615 has a rough surface and is used for filtering aluminum, ferric and magnesium hydroxides...

Ahlstrom Grade 617: 35 m - Fast Speed (non wet-strengthened). 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 rapid filtration...

Ahlstrom Grade 631: 10 m - Medium Speed (non wet-strengthened). 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...

Ahlstrom Grade 642: 2 m - Medium Speed (non wet-strengthened). 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...

Grade 8613: 4 µm - Sugar Testing Filter Paper. Designed for the sugar industry, this grade has a smooth black finish for use in applications requiring visual examination of particles.• Qualitative analysis• Low ash content 0...

Ahlstrom Grade 320: 2.48 mm Thickness; 240 mm /30 min. Absorption Speed. This super thick grade is one of the thickest papers on the market. Ahlstrom 320 offers extremely high flow and is recommended both for electrophoresis of large molecules and as a...

A high grade filter paper impregnated with a stabilized silicone that renders the paper hydrophobic while still retaining its aqueous phase properties. As a result, the solvent phase can still flow through the filter paper quickly and cleanly. It then...

Grade 113V: 30 µmVery thick and strong filter with creped surface for extremely high loading capacity, particularly in folded form. Fastest flow rate of any qualitative grade. Ideal for coarse particles and gelatinous precipitates.Image(s) are...

Grade 114V: 25 µmStrong filter with very fast flow rate. Ideal for coarse particles and gelatinous precipitates. Smooth surface.Image(s) are representative of the product group and not necessarily the individual product.Grade 114V

Grade 2V: 8 µmWidely used for general purpose filtration. Slightly more retentive than Grade 1. Has excellent particle retention and good filtration speed and loading capacity.Image(s) are representative of the product group and not necessarily the...

Grade 0048 application specific filter circlesWhatman cellulose filter papers for specific applications. Filter papers for use in soil analysis and filter papers for the sugar industry. Filter mat made from a mixture of cellulose and polyester. This mat...

Whatman offers a line of cellulose filter papers for specific applications. The product line includes filter papers for use in soil analysis and filter papers for the sugar industry.Grade 0790 1/2Acid-washed paper with ash content of approximately 0...

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses. • Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due...

These filter papers are made from super-refined cellulose and have been specifically designed to have particular properties for each technical application. The applications range from the filtration of beverages to the purification of electroplating...

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses. • Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due...

GE Whatman Grade 0903 Filter PaperImage(s) are representative of the product group and not necessarily the individual product.

These filter papers are made from super-refined cellulose and have been specifically designed to have particular properties for each technical application. The applications range from the filtration of beverages to the purification of electroplating...

Coarse filter mat with high wet strength. 250 µmImage(s) are representative of the product group and not necessarily the individual product.

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses. • Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due...

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 any significant impurities into the filtrate. The resins do, however,...

• Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses. • Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due...

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 any significant impurities into the filtrate. The resins do, however,...