Filter Paper
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Filter Paper
Qualitative and quantitative filter papers for the clarification and purification of samples for analysis. Available in a range of sizes, counts, grades, and formats such as circles and sheets, they are often made from cellulose or nylon.
Filter papers are familiar laboratory consumables often used with a conical funnel or similar device to filter and retain solids, particulates, and other materials from aqueous solutions, suspensions, solvents, and other liquids. Filter papers may be manufactured from natural cellulose, nylon, or glass or quartz fibers. They are typically available as pre-cut circles of various diameters, which may be folded into pleats, quadrants, or pyramids. Some filter papers are also sold as sheets or rolls that can be cut to size as needed.
Filter papers may be categorized as qualitative or quantitative. Qualitative filter papers are used for general purpose filtration applications where subsequent analysis is not critical. Quantitative filter papers (ashless papers) are intended for more exacting analytical work and may be weighed or otherwise processed after use. They are made from low-linting fibers that are typically acid-hardened during their manufacture to provide high wet strength and chemical resistance, and are pre-rinsed with demineralized water for extra purity.
Most filter papers are also graded numerically according to pore size, which in turn infers other parameters such as flow rate, retention, thickness, weight, and burst strength, that constrain and prescribe their application.
What is Filter Paper Used for?
• General applications: research laboratories, clinics, and educational settings
• Analytical applications: precipitant and particulate removal prior to further analysis or assay
• Industrial applications: foods and beverages, cosmetics, and gravimetric analysis of cements, clays, and iron and steel products
• Environmental applications: water, soil, or atmospheric sample analysis
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Filtered Search Results
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Fisherbrand™ Grade 600 Cellulose General Purpose Filter Paper: Discs
Used in schools and as bench protective paper. Fisherbrand™ Grade 600 Cellulose General Purpose Filter Paper is economical.
Thickness (Metric) | 0.15 mm |
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Pore Size | 10 to 20 μm |
Quantity | 100/Pk. |
Grade | 600 |
Material | Cellulose |
For Use With (Application) | Economical filter Paper used in schools and as bench protective Paper |
Fisherbrand™ Grade 14 Ashless Slowly Filtering Quantitative Filter Paper
Used for fine precipitates such as lead dioxide, calcium fluoride.
Thickness (Metric) | 0.15 mm |
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Pore Size | 3 to 5 μm |
Particle Retention | 3 to 5 μm |
Type | Ashless Quantitative Filter Paper |
Format | Disc |
Description | Ash Content: 0.007% |
Quantity | 100/Pk. |
Material | Cotton Linters |
Filtration Speed | 100 sec. |
Fisherbrand™ Grade 601 General Purpose Filter Papers
A filter paper used in analytical works in laboratories with medium filtration velocity.
Thickness (Metric) | 0.16 mm |
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Pore Size | 5 to 13 μm |
Format | Disc |
Quantity | 100/Pk. |
For Use With (Application) | General works, hospitals, research laboratories, schools, chemical industries, cosmetics, food and beverage industries |
Fisherbrand™ Grade 122 General Purpose Filter Papers
A general purpose filter paper used for all general works in the laboratory for excellent and consistent filtration.
Fisherbrand™ Grade 122 Cellulose General Purpose Filter Paper
Very fast filtration velocity. Fisherbrand™ Grade 122 Cellulose General Purpose Filter Paper is used for all general works in laboratories.
Cytiva Whatman™ Quantitative Filter Paper: Grade 589/1 Circles
Designed for fast filtration of coarse precipitate. Whatman™ Grade 589/1 Quantitatve FIlter Paper Circles support tests such as cement fineness measurement in a standard Blaine test or determination of the ash content in foodstuffs.
Thickness (Metric) | 190 μm |
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Flow Rate | High |
Particle Retention | 12 to 15 μm |
Type | Ashless |
Format | Disc |
Color Code | Black |
Grade | Grade 589/1 |
Material | Cotton Linters |
Filtration Speed | 25 s |
For Use With (Application) | Designed for gravimetric analysis and the preparation of samples for instrumental analysis.For the filtration of coarse precipitates.For many quantitative standard methods, especially for gravimetric applications (e.g., determination of the ash content |
Munktell Filtrak™ Grade 1002 General Purpose Filter Papers
These general purpose filter papers are suitable for typical general filtration tasks in the laboratory.
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Particle Retention | 6 to 10 μm |
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Type | General Purpose Filter Paper |
Basis Weight | 90 g/m2 |
Format | Disc |
Description | Plain surface |
Quantity | 100/Pk. |
Grade | Grade 1002 |
Material | Pulp |
Filtration Speed | 28 s/10 mL |
For Use With (Application) | General filtration tasks |
Munktell Filtrak™ Grade 00K Quantitative Ashless Filter Papers
These ashless filter papers are the typical grade for quantitative tasks with coarser precipitates such as lead-, iron- and silver-sulfide and calcium oxalate.
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Flow Rate | Medium to slow |
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Particle Retention | 5 to 6 μm |
Type | Quantitative Filter Paper |
Basis Weight | 80 g/m2 |
Format | Disc |
Description | Ashless |
Quantity | 100/Pk. |
Grade | 00K |
Material | Pure Cellulose |
Filtration Speed | 29 s/10 mL |
For Use With (Application) | Filtration of coarser precipitates |
Fisherbrand™ Grade 601 Cellulose General Purpose Filter Paper
Used in analytical works in laboratories. Fisherbrand™ Grade 601 Cellulose General Purpose Filter Paper has medium filtration velocity.
Thickness (Metric) | 0.16 mm |
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Pore Size | 5 to 13 μm |
Particle Retention | 5 to 13 μm |
Quantity | 100/Pk. |
Grade | 601 |
Material | Cellulose |
For Use With (Application) | Filter Paper used in analytical works in laboratories, medium filtration velocity |
Cytiva Whatman™ Qualitative Filter Papers – Grade 520 B
Filters particles of 15μm. Whatman™ Qualitative Filter Papers – Grade 520 B with high wet strength and flow rate are designed for technical use.
Thickness (Metric) | 500 μm |
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Particle Retention | 20 μm |
Format | Disc |
Grade | Grade 520b |
Material | Cellulose |
Filtration Speed | 30 s |
For Use With (Application) | Grade 520bll ½ thick, pleated filter paper with high wet strength offering a very high flow rate. |
Munktell Filtrak™ Grade 00H Quantitative Ashless Filter Papers
Recommended for use where a high purity is required for quantitative analysis.
Particle Retention | 1 to 2 μm |
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Format | Disc |
Grade | 00H |
Material | Cellulose |
Filtration Speed | 160s/10 mL |
Cytiva Whatman™ Grade 589/2 Quantitative Filter Paper
Retains medium fine precipitates using material with virtually no ash content. Whatman™ Grade 589/2 Quantitative Filter Paper is used when medium fine precipitates are being collected and papers must be ashed to support analysis.
Thickness (Metric) | 180 μm |
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Flow Rate | Medium |
Particle Retention | 4 to 12 μm |
Type | Ashless |
Color Code | White |
Material | Cotton Linters |
Filtration Speed | 70 s |
Munktell Filtrak™ Grade MGA Binder-Free Micro-Glass Fiber Filters
For general laboratory filtration, clarification of buffer and reagent solutions.
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Thickness (Metric) | 0.23 mm |
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Particle Retention | 1.6 μm |
Format | Disc |
Grade | MGA |
Material | Borosilicate Glass |
For Use With (Application) | General laboratory filtration, clarification of buffer and reagent solutions, corresponds to many international standards for air and water pollution monitoring. Foodstuff analysis, filtration of algae, bacteria cultures, proteins |
Thickness (Metric) | 350 μm |
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Flow Rate | 27 s/100mL/1.56cm2 |
Format | Disc |
Grade | GF 9 |
Material | Glass Microfiber |
Fisherbrand™ Grade 13 Ashless Medium Filtering Quantitative Filter Paper
Used for fine precipitates such as magnesium ammonium phosphate and calcium oxalate.
Thickness (Metric) | 0.16 mm |
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Pore Size | 5 to 8 μm |
Particle Retention | 5 to 8 μm |
Type | Ashless Quantitative Filter Paper |
Description | Ash Content: 0.007% |
Quantity | 100/Pk. |
Grade | 13 |
Material | Cotton Linters |
Filtration Speed | 50 sec. |