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 |
---|---|
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.
Cytiva Whatman™ Grade 44 Quantitative Filter Paper
Reduces overall ash content and the amount of time required for filtration. Whatman™ Grade 44 Quantitative Filter Paper provides faster gravimetric analysis with filter thinner material.
Thickness (Metric) | 176 μm |
---|---|
Pore Size | 3 μm |
Flow Rate | Medium |
Particle Retention | 3 μm |
Type | Ashless |
Format | Disc |
Airflow Rate | 56 s/100 mL/in2 |
Quantity | 100 Pack |
Grade | Grade 44 |
Material | Cotton Linters |
Porosity | Fine |
Filtration Speed | 995 sec. |
Cytiva Whatman™ Grade 114V Folded Qualitative Filter Papers
Supports high loading capacity due to wet-strengthened filter paper. Whatman™ Grade 114V Folded Qualitative Filter Papers offers fast filtration of course and gelatinous precipitates.
Thickness (Metric) | 190 μm |
---|---|
Pore Size | >25 μm |
Flow Rate | Fast |
Particle Retention | Coarse particles and gelatinous precipitates |
Format | Pre-pleated Circle |
Quantity | 100 Pack |
Grade | Grade 114V |
Material | Cellulose |
Filtration Speed | 38 sec. |
For Use With (Application) | Whatman Grade 114V smooth filter paper from GE is wet-strengthened for high mechanical stability. Grade 114V fluted filters are suitable for recovery of large particles and gelatinous precipitates. |
Cytiva Whatman™ Cellulose Nitrate Membrane Filters
Manufactured under strictly controlled conditions. Whatman™ Cellulose Nitrate Membrane Filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity.
Thickness (Metric) | 105 to 140 μm |
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Format | Disc |
Quantity | 100 Pack |
Material | Cellulose Nitrate |
Cytiva Whatman™ Cellulose Ester Membranes
Offers a high degree of internal surface area for greater adsorption of product
Cytiva Whatman™ QM-C Quartz Filter Paper, Circles
For heavy metal analysis of particulate matter and air quality monitoring
Thickness (Metric) | 475 μm |
---|---|
Type | Quartz Filter Paper |
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 |
Cytiva Grade 4V Qualitative Filter Papers, Fluted
Well suited for qualitative analysis or general filtration of coarse particles. Whatman™ Grade 4V Qualitative Filter Papers, Fluted are designed to increase filtration speed, flow rate and loading capacity. Available in a range of sizes.
Thickness (Metric) | 210 μm |
---|---|
Flow Rate | 247mL/min. |
Particle Retention | 20 to 25 μm |
Type | Filter Paper |
Format | Folded (Pre-pleated) |
Quantity | 100 Pack |
Grade | Grade 4 |
Material | Cellulose |
Filtration Speed | 37 s (Herzberg) |
For Use With (Application) | GE’s Whatman Grade 4V filter paper is well suited for qualitative analysis or general filtration of coarse particles. The fluted filter design increases filtration speed, flow rate, and loading capacity. |
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. |
Thickness (Metric) | 0.3 mm |
---|---|
Pore Size | 12 to 16 μm |
Particle Retention | 12 to 16 μm |
Quantity | 100 Pack |
Grade | 1103 |
Material | Cellulose |
For Use With (Application) | For dyes, Ether, Alcoholic solutions, Eaux de Cologne, salted solutions, vegetal extracts, hair solutions, perfumes, tinctures, saccharine juices, vinegar |
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 |
Fisherbrand™ Grade 11 Ashless Fast Filtering Quantitative Filter Paper
Used for coarse and voluminous precipitates such as iron, aluminum and chromium hydroxides, Si-determination in steel and pig iron analysis.
Thickness (Metric) | 0.18 mm |
---|---|
Pore Size | 12 to 15 μm |
Particle Retention | 12 to 15 μm |
Type | Ashless Quantitative Filter Paper |
Description | Ash Content: 0.007% |
Quantity | 100/Pk. |
Grade | 11 |
Material | Cotton Linters |
Filtration Speed | 10 sec. |
For Use With (Application) | Used for coarse and voluminous precipitates such as Iron, Aluminum and Chromium Hydroxide, Si determination in Steel and Pig Iron 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.
Thickness (Metric) | 0.17 mm |
---|---|
Pore Size | 17 to 30 μm |
Particle Retention | 17 to 30 μm |
Grade | 122 |
Material | Cellulose |
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 |
---|---|
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 |