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
- (1)
- (3)
- (1,122)
- (9)
- (1)
- (293)
- (11)
- (121)
- (4)
- (1)
- (2)
- (1)
- (37)
- (1)
- (3)
- (17)
- (1)
- (1)
- (18)
- (169)
- (1)
- (1)
- (1)
- (2)
- (1)
- (7)
- (8)
- (3)
- (29)
- (1)
- (2)
- (707)
- (1)
- (15)
- (1)
- (10)
- (1)
- (2)
- (1)
- (11)
- (245)
- (9)
- (1)
- (469)
- (1)
- (3)
- (6)
- (4)
- (1)
- (1)
- (1)
- (3)
- (5)
- (1)
- (3)
- (2)
- (1)
- (2)
- (3)
- (3)
- (7)
- (7)
- (1)
- (2)
- (10)
- (7)
- (2)
- (3)
- (1)
- (1)
- (1)
- (3)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (3)
- (4)
- (1)
- (25)
- (1)
- (1)
- (2)
- (3)
- (10)
- (18)
- (14)
- (12)
- (1)
- (1)
- (5)
- (34)
- (1)
- (22)
- (12)
- (41)
- (1)
- (9)
- (1)
- (27)
- (3)
- (1)
- (102)
- (13)
- (1)
- (2)
- (25)
- (4)
- (1)
- (29)
- (3)
- (1)
- (3)
- (76)
- (1)
- (15)
- (26)
- (20)
- (10)
- (6)
- (23)
- (21)
- (12)
- (1)
- (15)
- (3)
- (62)
- (2)
- (9)
- (1)
- (13)
- (1)
- (13)
- (30)
- (1)
- (8)
- (1)
- (41)
- (16)
- (132)
- (12)
- (4)
- (3)
- (9)
- (11)
- (6)
- (47)
- (8)
- (3)
- (3)
- (1)
- (30)
- (131)
- (1)
- (1)
- (2)
- (1)
- (5)
- (25)
- (1)
- (7)
- (5)
- (5)
- (8)
- (2)
- (3)
- (1)
- (1)
- (7)
- (1)
- (1)
- (16)
- (42)
- (8)
- (8)
- (59)
- (13)
- (9)
- (1)
- (11)
- (5)
- (29)
- (2)
- (38)
- (27)
- (12)
- (15)
- (24)
- (4)
- (11)
- (7)
- (24)
- (2)
- (2)
- (6)
- (1)
- (13)
- (2)
- (1)
- (24)
- (11)
- (50)
- (64)
- (2)
- (12)
- (4)
- (1)
- (17)
- (4)
- (21)
- (1)
- (32)
- (3)
- (1)
- (1)
- (1)
- (1)
- (1)
- (1)
- (21)
Filtered Search Results
Fisherbrand™ Grade 113 Cellulose Medium Filtering Qualitative Filter Paper
Filters fine particulates.
Thickness (Metric) | 0.16 mm |
---|---|
Pore Size | 5 to 8 μm |
Particle Retention | 5 to 8 μm |
Description | Ash Content: 0.06% |
Quantity | 100 Pack |
Grade | 113 |
Material | Cellulose |
For Use With (Application) | Suitable for fast filtration of liquids with fine particle |
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.
Thermo Scientific™ Western Blotting Filter Paper, 0.83 mm thick, 8 x 13.5 cm
Pre-cut cotton sheets for wet or semi-dry, passive or electrophoretic transfer of proteins from polyacrylamide gels to PVDF, nitrocellulose, or other membranes.
Fisherbrand™ Grade 1101 Cellulose Technical Filter Paper
Used for filtration of fatty products and suitable for hot filtrations.
Thickness (Metric) | 0.55 mm |
---|---|
Pore Size | 38 to 75 μm |
Particle Retention | 38 to 75 μm |
Quantity | 100 Pack |
Grade | 1101 |
Material | Cellulose |
For Use With (Application) | For syrups, essential oils, varnish, resinous solutions, paints, sweetened juices, wines |
Fisherbrand™ Grade 14 Ashless Slowly Filtering Quantitative Filter Paper
Used for fine precipitates such as lead dioxide, calcium fluoride.
Thickness (Metric) | 0.15 mm |
---|---|
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 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 601 General Purpose Filter Papers
A filter paper used in analytical works in laboratories with medium filtration velocity.
Thickness (Metric) | 0.16 mm |
---|---|
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 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 |
---|---|
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 |
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 |
Format | Pleated Circle |
Quantity | 100 Pack |
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 13 Ashless Medium Filtering Quantitative Filter Paper
Used for fine precipitates such as magnesium ammonium phosphate and calcium oxalate.
Thickness (Metric) | 0.16 mm |
---|---|
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. |
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™ 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 |
---|---|
Flow Rate | Medium |
Particle Retention | 4 to 12 μm |
Type | Ashless |
Color Code | White |
Material | Cotton Linters |
Filtration Speed | 70 s |
Cytiva Whatman™ Grade 597 Qualitative Filter Circles
Filters carbon dioxide and turbidity during beverage analysis. Whatman™ Grade 597 Qualitative Filter Circles may also be used to determine fat content in food analysis.
Thickness (Metric) | 180 μm |
---|---|
Pore Size | 4 to 7 μm |
Flow Rate | Medium Fast |
Particle Retention | 7 μm |
Format | Disc |
Grade | Grade 597 |
Material | Cellulose |
Filtration Speed | Approx. 140 s |
For Use With (Application) | A standard grade 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). |
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 |
---|---|
Pore Size | 4 to 7 μm |
Flow Rate | Medium Fast |
Particle Retention | 7 μm |
Format | Pleated Circle |
Quantity | 100 Pack |
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). |