Filter Paper
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
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 600 Cellulose General Purpose Filter Paper
Used in schools and as bench protective paper. Fisherbrand™ Grade 600 Cellulose General Purpose Filter Paper is economical.
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 113 Cellulose Medium Filtering Qualitative Filter Paper
Filters fine particulates.
Thickness (Metric) | 0.16 mm |
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Pore Size | 5 to 8 μm |
Description | Ash Content: 0.06% |
Grade | 113 |
Material | Cellulose |
Cytiva Reeve Angel RA TCLP Glass Fiber Filters
Assists with determining the leaching potential in a landfill for hazardous organic and inorganic contaminants into groundwater threatening drinking water
Cytiva Whatman™ QM-C Quartz Filter Paper, Circles
For heavy metal analysis of particulate matter and air quality monitoring
Thickness (Metric) | 475 μm |
---|---|
Basis Weight | 85 g/m2 |
Format | Disc |
Airflow Rate | 19 s/100 mL/in2 |
Temperature (Metric) Max | 1200°C |
Grade | Grade QM-C |
Material | Silica |
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™ Qualitative Filter Paper: Grade 595 ½ Pleated Circles
Pleated to save time and achieve optimal fit in conical filter funnels. Whatman™ Qualitative Filter Paper: Grade 595 ½ Pleated Circles provide extra surface area to increase total loading capacity.
Thickness (Metric) | 150 μm |
---|---|
Pore Size | 7 μm |
Flow Rate | Medium fast |
Particle Retention | 7 μm |
Quantity | 100 Pk. |
Grade | Grade 595 ½ |
Material | Cellulose |
Filtration Speed | Approx. 80 s |
For Use With (Application) | A prepleated filter used for many routine analytical applications in different industries (e.g., particle separation from food extracts or filtration of solids from digested environmental samples, e.g., for ICP/AAS analysis). |
Fisherbrand™ Grade 602 Medium Filtering Special Filter Paper
Suitable for all works in laboratories. Fisherbrand™ 602 Medium Filtering Special Filter Paper is used in filtration of various products, pharmaceutical wrapping (pills, powders, dressing bandages and tablets).
Length (Metric) | 520 mm |
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Grade | 602 |
For Use With (Application) | All works in laboratories - filtration of various products, pharmaceutical wrapping (pills, powders , dressing bandages and tablets) |
Width (Metric) | 420 mm |
Dimensions (L x W) | 520 x 420mm |
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.
Thickness (Metric) | 0.17 mm |
---|---|
Pore Size | 17 to 30 μm |
Particle Retention | 17 to 30 μm |
Grade | 122 |
Material | Cellulose |
Cytiva Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles
Pleated to save time and achieve optimal fit in conical filter funnels. Whatman™ Qualitative Filter Paper: Grade 597½ Pleated Circles provide extra surface area to increase total loading capacity.
Thickness (Metric) | 180 μm |
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Pore Size | 4 to 7 μm |
Flow Rate | Medium Fast |
Particle Retention | 7 μm |
Format | Pre-pleated Circle |
Quantity | 100 Pk. |
Grade | Grade 597 ½ |
Material | Cellulose |
Filtration Speed | Approx. 70 s |
For Use With (Application) | A prepleated filter used for a wide variety of analytical routine applications in different industries like food testing (e.g., determination of fat content) or removal of carbon dioxide and turbidity from beverages (e.g., beer analysis). |
Sartorius™ Smooth Folded Filters, Grade 3-HW
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Use for routine qualitative analyses in the lab. Sartorius™ Smooth Folded Filters, Grade 3-HW are wet-strengthened for use in pressure and vacuum filtration. Ultra-pure filter paper is available as a folded filter cone in a variety of diameters.
Thickness (Metric) | 0.14 mm |
---|---|
Particle Retention | 8 to 12 μm |
Type | Qualitative Filter Paper |
Format | Folded |
Quantity | 100 Pk. |
Grade | 3HW |
Material | Cotton Linters, Refined Pulp |
Filtration Speed | 20μm/sec. |
For Use With (Application) | For qualitative-technical analyses, used for routine analyses like clarification, determination of substances, but also as discs with a center hole for technical applications |
Macherey-Nagel™ MN 640 w Grade Ashless Filter Papers, Round
Acid-washed with an extremely low ash content of <0.01% for quantitative analysis and gravimetric applications. Macherey-Nagel™ MN 640 w Ashless Filter Papers, Round are smooth-surface filter papers that perform fast filtrations of coarse particulates.