30 mls/min Filtration speed rapidity., Medium loading capacity., Quantitative analysis , Low ash content 0., 06 percent , Untreated; high wet-strength , Consistent performance , Custom cut This grade has finer particle retention than Ahlstrom 601 but with slightly lower filtration speed. Ahlstrom 642 also has higher absorption than Ahlstrom 601 Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. 33 cm diameter circles - Grade 642 Ahlstrom Qualitative Filter - 100/pk - KTEC Equipment and Filter Paper Ahlstrom Grade 642 | 6420-3300 | Qualitative - Acme Mills 20.5 Cm Filter Discs This grade has finer particle retention than Ahlstrom 601 but with slightly lower filtration speed. Ahlstrom Qualitative Filter Papers Grade 42 All our qualitative grades consist of greater than 95 percent super refined a-cellulose and linter fibers. Ahlstrom offers a complete range of low ash filter papers for general laboratory work that provides you with the correct combination of particle retention, filtration speed, loading capacity and wet-strength.
