These filter papers are made from super-refined cellulose and have been specifically designed to have particular properties for each technical application. The applications range from the filtration of beverages to the purification of electroplating baths.
Grade 520 a: 15-18 µm
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils or plant extracts). Available prepleated as Grade 520 a ½.
Grade 520 bII: 15-19 µm
A thick paper with high wet strength offering a very high flow rate. Also available prepleated as Grade 520 bII ½.
Grade 0858: 7-12 µm
Grained, with medium fast flow rate and medium retention. A universal filter paper, used for the filtration of extracts, oils, beer, syrups etc., also applied in filter presses or for the aspiration of liquids. Available prepleated as Grade 0858 ½.
Grade 0860: 12 µm
Comparable to 0858 but with a smooth surface, slightly thinner and faster. Also available prepleated as Grade 0860 ½.
Grade 0903: 4-7 µm
Thin filter paper with smooth surface. Offers medium to slow flow rate and good retention for small particles.
Grade 0905: 12-25 µm
A creped paper for coarse particles, offers a very high filtration speed. Available prepleated as Grade 0905 ½.
Grade 1574: 7-12 µm
A medium fast filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573. Also available prepleated as Grade 1574 ½.
Grade 1575: < 2 µm
Slow filter paper with high wet strength. This paper has the same chemical resistance characteristics as Grade 1573.
Grade 2294: 8-15 µm
A very thick filter card with high wet strength. Offers very high flow rate and retains medium to coarse particles.
Grade 2411: 9-11 µm
A fast filter paper with high wet strength and medium retention. Frequently used as a protective paper in filter presses.
Grade 2589 a: 6-12 µm
A fast to medium fast filter with high wet strength offering medium retention.
Grade 2589 c: 4-8 µm
Thick filter with medium to slow filtration speed, high wet strength, and good retention for smaller particles.
Grade 2589 d: 2-6 µm
A very thick filter with high wet strength. Offers medium to slow flow rate and retains very fine precipitates.
Grade Shark Skin: 8-12 µm
Creped, medium to slow filter paper. Resistant to weak acids and bases. Often used as a protective paper for filter press cloths, as well as in processing of cocoa butter and edible oils.
| Typical Properties - Qualitative Standard Filter Grades | ||||||
| Grade | Description | Particle retention in liquid (µm) (approx.) | Filtration speed (approx.) herzberg (s) | Air flow (s/100 ml/in2) | Typical thickness (µm) | Basis weight (g/m2) |
| 520 a | Very fast, creped, high wet strength | 15-18 | 17.5 | - | 300 | 90 |
| 520 b II | Very fast, creped, wet strength, thick | 15-19 | 15 | - | 500 | 135 |
| 0858 | Medium fast, grained | 7-12 | 55 | 4.9 | 170 | 75 |
| 0860 | Medium fast, smooth | 7-12 | 60 | 4.8 | 170 | 75 |
| 0903 | Medium to slow, smooth | 4-7 | 175 | - | 140 | 65 |
| 0905 | Very fast, creped | 12-25 | 20 | - | 270 | 75 |
| 1574 | Medium fast, very low fiber release | 7-12 | 85 | - | 160 | 90 |
| 1575 | Slow, very low fiber release | < 2 | 700 | - | 140 | 92 |
| 2294 | Fast, wet strength, thick | 8-15 | 27.5 | 4.4 | 1500 | 556 |
| 2411 | Fast, creped, wet strength | 9-11 | 35 | - | 350 | 85 |
| 2589 a | Medium fast, wet strength | 6-12 | 60 | - | 430 | 200 |
| 2589 c | Medium to slow, wet strength | 4-8 | 160 | - | 750 | 400 |
| 2589 d | Medium to slow, wet strength, thick | 2-6 | 235 | - | 1000 | 500 |
| Shark Skin | Medium to slow, wet strength, thin, creped | 8-12 | 77.5 | - | 170 | 44 |
| Ordering Information - Filter Papers for Technical Use | ||
| Catalog Number | Description | |
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| Grade 520 a circles, 270 mm, 100/pk | ||
| Grade 520 a sheets, 580 x 580 mm, 250/pk | ||
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| Grade 520 bII sheets, 580 x 580 mm, 250/pk | ||
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| Grade 0858 sheets, 110 x 580 mm, 500/pk | ||
| Grade 0858 sheets, 390 x 390 mm, 500/pk | ||
| Grade 0858 sheets, 450 x 450 mm, 500/pk | ||
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| Grade 0860 circles, 150 mm, 100/pk | ||
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| Grade 0903 sheets, 450 x 450 mm, 500/pk | ||
| Grade 0903 sheets, 580 x 580 mm, 500/pk | ||
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| Grade 0905 sheets, 450 x 450 mm, 500/pk | ||
| Grade 0905 sheets, 580 x 580 mm, 500/pk | ||
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| Grade 1574 circles, 150 mm, 100/pk | ||
| Grade 1574 sheets, 400 x 400 mm, with 4 holes each 28 mm, 500/pk | ||
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| Grade 1575 sheets, 300 x 309 mm, with 4 holes each 20 mm, 500/pk | ||
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| Grade 2294 circles, 110 mm, 100/pk | ||
| Grade 2294 circles, 180 mm with central hole 33 mm, 100/pk | ||
| Grade 2294 circles, 210 mm with central hole 60 mm, 100/pk | ||
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| Grade 2411 sheets, 580 x 580 mm, 250/pk | ||
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| Grade 2589 a circles, 140 mm, 500/pk | ||
| Grade 2589 a sheets, 580 x 580 mm, 100/pk | ||
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| Grade 2589 c sheets, 25 x 75 mm, 100/pk | ||
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| Grade 2589 d sheets, 25 x 75 mm, 100/pk | ||
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| Shark Skin circles, 90 mm, 100/pk | ||
| Shark Skin circles, 110 mm, 100/pk | ||
| Shark Skin circles, 125 mm, 100/pk | ||
| Shark Skin circles, 150 mm, 100/pk | ||
| Shark Skin circles, 185 mm, 100/pk | ||
| Shark Skin circles, 240 mm, 100/pk | ||
| Shark Skin circles, 270 mm, 100/pk | ||
| Shark Skin circles, 290 mm, 100/pk | ||
| Shark Skin circles, 320 mm, 100/pk | ||
| Shark Skin circles, 340 mm, 100/pk | ||
| Shark Skin circles, 385 mm, 100/pk | ||
| Shark Skin circles, 500 mm, 100/pk | ||
| Shark Skin circles, 812.8 mm, 100/pk | ||
| Shark Skin sheets, 8 x 10 inches, 100/pk | ||
| Shark Skin sheets, 37 x 37 inches, 500/pk | ||
| Shark Skin sheets, 26 x 53 inches, 500/pk | ||
| Shark Skin sheets, 32 x 64 inches, 500/pk | ||
| Shark Skin roll, 21 inches x 750 feet, 1/pk | ||
