VWR®, Qualitative filter papers,FILTERPAPER QUALITATIVE 410, SLOW, 2 μM PARTICLE RETENTION, 90 MM 1 * 100 items
د.إ 80.10
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Description
Grade 402 and 302: General grade for qualitative tasks. Suitable for most sulphides. Determination of total fat content in dairy products.
Grade 403 and 313: Drugs, pharmaceuticals, liquors, tinctures, chromatography and protein-free filtrations in the clinical laboratory.
Grade 403 and 313: Drugs, pharmaceuticals, liquors, tinctures, chromatography and protein-free filtrations in the clinical laboratory.
Grade 410 and 305: Filtration of copper(I) oxide, lead sulphate, barium sulphate, manganese carbonate and more for analytical work. Suitable for extremely difficult filtration and for clarification of wine.
Grade 413 and 303: For routine laboratory work, suitable for student requirements in general chemistry, also for filtration of aluminium phosphate, barium carbonate, lead chromate and more.
Grade 413 and 303: For routine laboratory work, suitable for student requirements in general chemistry, also for filtration of aluminium phosphate, barium carbonate, lead chromate and more.
Grade 415 and 301: Coarse precipitates such as aluminium hydroxide, cobalt carbonate, mercury iodide, magnesium hydroxide and more.
Grade 417: Rapid filtrations where fine particle retention is not required.
Grade 417: Rapid filtrations where fine particle retention is not required.
Grade 307: For brewing industry. Embossed surface filter paper 70 g/m² for malt analysis in breweries (according to EBC standard).
Grade 600 and 310: Qualitative filter paper for use in routine laboratories, universities and hospitals. Made of 100% cellulose with no binder.
Grade 600 and 310: Qualitative filter paper for use in routine laboratories, universities and hospitals. Made of 100% cellulose with no binder.
Grade 315: Gelatinous and coarse precipitates.
SPECIFICATIONS
| Grade | 401 | 402 | 403 | 410 | 413 | 415 | 417 | 600 | 301 | 302 | 303 | 305 | 307 | 310 | 313 | 315 |
| Weight | 84 g/m² | 84 g/m² | 87 g/m² | 80 g/m² | 73 g/m² | 80 g/m² | 110 g/m² | 64 g/m² | 84 g/m² | 84 g/m² | 73 g/m² | 84 g/m² | 70 g/m² | 64 g/m² | 87 g/m² | 73 g/m² |
| Thickness | 0,2 mm | 0,17 mm | 0,17 mm | 0,15 mm | 0,16 mm | 0,16 mm | – | 0,15 mm | 0,2 mm | 0,17 mm | 0,16 mm | 0,14 mm | – | 0,15 mm | 0,17 mm | 0,17 mm |
| Particle retention | 12 – 15 µm | 8 – 12 µm | 5 – 8 µm | 2 – 3 µm | 5 – 13 µm | 12 – 15 µm | 35 – 45 µm | 13 µm | 12 – 15 µm | 8 – 12 µm | 5 – 13 µm | 2 – 3 µm | 8 µm | 13 µm | 5 – 8 µm | 17 – 30 µm |
| Max. pore size | 50 µm | 40 µm | 30 µm | 20 µm | 45 µm | 50 µm | – | 60 µm | 50 µm | 40 µm | 45 µm | 20 µm | 40 µm | 60 µm | 30 µm | 70 µm |
| Min. pore size | 31 µm | 23 µm | 15 µm | 9 µm | 20 µm | 31 µm | – | 25 µm | 31 µm | 23 µm | 20 µm | 9 µm | 23 µm | 25 µm | 15 µm | 40 µm |
| Filtration speed | 40 s (Herzberg) | 90 s (Herzberg) | 250 – 300 s (Herzberg) | 2500 s (Herzberg) | 350 s (Herzberg) | 8 s (DIN 53137) | 11 s (DIN 53137) | 200 – 250 s (Herzberg) | 70 s (Herzberg) | 150 s (Herzberg) | 160 s (Herzberg) | 2500 s (Herzberg) | 520 s (Herzberg) | 110 s (Herzberg) | 500 s (Herzberg) | 60 s (Herzberg) |
| Wet burst strength | 2 psi | 2,5 psi | 0,5 psi | 1 psi | 9 psi | 0,8 psi | 15 psi | 6,5 psi | 2 psi | 2,5 psi | 9 psi | 3,5 psi | – | 6,5 psi | 0,5 psi | 6,5 psi |
| Dry burst strength | 11 psi | 17 psi | 12,5 psi | 22 psi | 28 psi | 8,5 psi | 35 psi | 19 psi | 11 psi | 17 psi | 28 psi | 18 psi | – | 19 psi | 12,5 psi | 17,5 psi |
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