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Filter Paper
GE Healthcare
Qualitative Filter Papers, Grade No. 1
Most widely used general purpose laboratory filter paper Medium retention, 11 µm, medium - fast flow rate, smooth surface Clarifies liquids in routine laboratory applications and for air pollution monitoring. Used in air monitors to collect atmospheric dust for assessment of stain intensity.…
GE Healthcare
No. 42 Quantitative Ashless Paper
Suitable for precipitates that are ordinarily difficult to filter (2.5 µm particle retention) Acid wash, ash content 0.007% Highly retentive for very fine analytical precipitates, such as barium sulfate or metastannic acid Recommended for use with vacuum
GE Healthcare
No. 41 Quantitative Ashless Paper
Fast filtration of coarse or gelatinous precipitates (20-25 µm particle retention) Acid washed, ash content 0.007% Especially suitable for iron or aluminum hydroxides; rough surface Widely used in determining silicon in iron and steel analysis Used for quantitative air pollution analysis when…
GE Healthcare
No. 40 Quantitative Ashless Paper
Most widely used general purpose gravimetric filter paper; acid washed, ash content 0.007% Medium speed and retention (8 µm); rough surface Used for calcium oxalate, silica in steel and well-digested barium sulfate; as a high-purity filter in the collection of trace elements and radionuclides in…
GE Healthcare
Qualitative Filter Papers, Grade No. 4
Fast filtering with excellent retention of coarse particles and gelatinous precipitates Compliments No. 1 for air pollution monitoring when high flow rates are important Low retentivity, 20-25 µm Used as a rapid filter for clean-up of biological fluids or organic extracts during analysis.
Thomas®
Filter Paper, Qualitative Grades
Designed for general qualitative laboratory work Fast filtering speed; 24 mm 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 0.23 mm;…
Munktell
Glass Fiber Filter Paper, MG 550-HA Grade
Temperature resistant up to 550°C Munktell grade MG 550-HA is a binder-free glass fiber filter suitable for suspended solid analysis. The technical data of MG 550-HA corresponds to standard methods for determining total suspended solids in water. Other micro-glass fiber filters for air pollution…
Ahlstrom
Qualitative Filter Papers, Ahlstrom 613
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…
Sartorius
Quantitative filter paper
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
Ahlstrom
Glass Microfiber Filters, Ahlstrom 111
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…
Munktell
Pre-Weighed TSS Filters
Munktell pre-weighed, binder-free, micro-glass filters are individually weighed and washed three times with de-ionized water to remove any extractables. The filters are then dried at 550°C, slowly cooled, and then desiccated prior to reweighing to the nearest 0.1mg. After reweighing, the pre…
Thomas®
Qualitative Cellulose Filter Papers
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…
GE Healthcare
Qualitative Filter Papers, Grade No. 3
For qualitative analysis when extensive washing is necessary Double thickness of No. 1 High retentivity, 6 µm particle retention Thick and strong, used in Buchner funnels and high precipitate capacity without clogging Highly absorbent, use as a sample carrier Used for the radio-assay of…
GE Healthcare
Qualitative Filter Papers, Grade No. 2
Standard grade for analytical purposes, especially suited for qualitative analysis of the alkaline earths Slightly thicker, more retentive (8 µm particle retention) and more absorbent than No. 1 Medium flow rate
Thomas®
Black Filter Papers
A deep black, qualitative paper for filtering light colored sediments, etc. Medium speed Retains crystalline precipitates of medium fineness 6 µm pore size
Sartorius
Regenerated Cellulose Filters
Sartorius membrane filters are available in a wide range of pore sizes, membrane types and diameters to fit the extensive array of applications being performed in the laboratory. Available in diameters from 13mm to 90mm and pore sizes from 0.1 to 8µm depending on material. Additionally, Cellulose…
Munktell
1001 Grade General Purpose Filter Paper
These papers are made for general purpose filtration with a low ash so that they can be used for ordinary qualitative filtration work. Our range of general purpose filter papers are designed for a variety of applications with different basis weights and properties such as for instance…
GE Healthcare
No. 44 Quantitative Ashless Paper
Recommended where the greatest accuracy in quantitative work is required (3 ?m) Thin version of No. 42; minimizes actual ash content per circle; rough surface
Munktell
Micro-Glass Fiber Filter Paper, MGA Grade
For Water Pollution Control Micro-glass fiber filters, due to their very fine fibers, allow high efficiency rates even down into the submicronic range combined with good permeability and high dirt holding capacity. They are non-hygroscopic and biologically inert. The chemical resistance to…
GE Healthcare
Hardened Ashless No. 541 Quantitative Paper
Very fast filtration to retain coarse or gelatinous precipitates (20-25 µm particle retention) Double acid wash, ash content 0.006% Useful in the intermediate stages of gravimetric analysis under strong acid or alkaline conditions Exceptionally high wet strength allows repeated washings;…
Munktell
1288 Grade Qualitative Filter Paper
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…
GE Healthcare
Hardened Low Ash No. 50 Quantitative Papers
Retention of the finest crystalline precipitates (2.7 microns) Hardened and highly glazed surface; low ash .0015% Slow flow rate Tough, resistant to pressure, withstands repeated use Precipitates can be scraped off without injury to surface
Sartorius
Qualitative Filter Paper
Qualitative filter papers: Made of refined pulp and cotton linters with more than 95% alpha cellulose content. The ash content of these filter papers is
GE Healthcare
Whatman No. 91 Sugar Testing Filter Paper
White, creped surface paper, >10 ?m particle retention Wet strengthened 19 mm diameter circles, approximately 0.21 mm thick Paper contains a small quantity of a chemically-stable resin to improve wet strength. This does not introduce any significant impurities to the filtrate, but…
Thomas®
Filter Paper, Qualitative Grade
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
GE Healthcare
Reeve Angel Grade 226 Creped Filter Paper
Grey, creped surface provides optical contrast for white or dark filtrates Retains coarse or gelatinous precipitates (20-25 ?m) High filtration speed High wet strength 0.28 mm thick High-loading capacity filters are used extensively in sugar and pharmaceutical laboratories…
GE Healthcare
Qualitative Filter Papers, Grade No. 5
Maximum degree of fine particle filtration in the qualitative range High retentivity; retains the finest precipitates (2.5 µm) Excellent for clarifying cloudy suspensions and for water analysis Suitable for use in Buchner funnels
GE Healthcare
No. 43 Quantitative Ashless Paper
Intermediate in retention and flow rate between No. 40 and No. 41 (16 microns) Medium retention and medium flow rate Double acid washed, ash 0.01%
GE Healthcare
Reeve Angel No. 202 Qualitative Grade Filter Paper
Moderately open structure provides medium-fast filtration of coarse particles Contains wet-strength additive Creped surface provides greater true surface area Widely used in pharmaceutical and biological applications
Thomas®
Quantitative Cellulose Filter Papers
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…
GE Healthcare
No. 1ps, Phase Separator Paper
Water-repellent to retain aqueous solutions while allowing organic solutions to pass through Silicone treated for water repellency Effects separations of immiscible aqueous and organic solvent mixtures; not suitable for emulsions Complete recovery of organic phase solute from paper…
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