Whatman® qualitative filter paper, Grade 4
ALDRICH/WHA1004090 - circles, diam. 90 mm, pack of 100
Synonym: Z240540; filter papers
Product Type: Equipment/Book
Cytiva-28-4140-05
| ash | ≤0.06% |
| basis weight | 92 g/m2 |
| diam. | 90 mm |
| manufacturer/tradename | Whatman 1004-090 |
| Whatman Article No. 28414012 (US reference) | |
| material | cellulose filters |
| circles | |
| packaging | pack of 100 |
| parameter | 0.22 psi wet burst |
| 37 sec/100 mL speed (Herzberg) | |
| pore size | 20-25 μm (Particle retention) |
| thickness | 205 μm |
| Features and Benefits: | • Useful in qualitative analytical separations when Fast flow is required and the collection of fine particles is not critical. • These cellulose filters are used in qualitative analytical techniques to determine and identify materials (e.g., in air pollution monitoring). |
| General description: | Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. Excellent retention: captures coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Fast filtration: useful for routine clean-up of biological fluids or organic extracts during analysis Grade 4 Qualitative Filter Papers (20-25 µm particle retention) are available in a variety of sizes and formats including circles, sheets, and rolls. They are also available as prepleated filters, which give improved flow rate and increased loading capacity compared to equivalent flat filters. |
| Legal Information: | Whatman is a registered trademark of Cytiva |
| Other Notes: | Field of Use : For internal research use only. Products are not intended for diagnostic use or resale. |
| UNSPSC | 41104900 |