Whatman™ Grade 3 Standard Qualitative Filter Paper, 460 x 570 mm
Qualitative Filter Paper, 460 x 570 mm, Cellulose, Grade 3, Standard Grade Type, Sheet Format, 390 µm Thickness, 6 µm Particle Retention in Liquid, 185 g/m2 Nominal Basis Weight, 325 secs/100 ml (Herzberg) Filtration Speed
- Manufacturer Part No: 1003-917
- SECO Part No: 12-5002-67
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A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in buchner funnels. Prepleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters. Grade 3: 6 µm. Double the thickness of Grade 1 with still finer particle retention and excellent loading capacity; more precipitate can be held without clogging. The extra thickness gives increased wet strength and makes this grade highly suitable for use in Buchner funnels. The high absorbency is particularly valuable when the paper is used as a sample carrier. This filter is also available in the FilterCup. This is a convenient, disposable 70 mm filter funnel with a 250 ml capacity molded from polypropylene with an integral, heat bonded filter (catalog number 1600-003).
| Grade | : | Grade 3 |
| Material (ml/min) | : | Cellulose |
| Dimension | : | 460 x 570 mm |
| Ash Content | : | 0.0006% |
| Grade Type | : | Standard |
| Type | : | Qualitative |
| Dry Burst Pressure | : | 193 kPa/28 psi |
| Filtration Speed | : | 325 sec/100 ml (Herzberg) |
| Format | : | Sheet |
| Nominal Air Flow Rate | : | 26 sec/100 ml/in2 |
| Nominal Basis Weight | : | 185 g/m2 |
| Particle Retention in Liquid | : | 6 µm |
| Properties | : | Thick |
| Thickness | : | 390 µm |
| Typical Water Flow Rate | : | 25 sec |
| Wet Burst Pressure | : | 2.8 kPa/0.40 psi |
| Loading Capacity | : | H |
- Application: For use in Buchner funnels
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