Cytiva - Whatman 1002-320 Grade 2 Filter Paper
32.0cm diameter. More retentive, slower, and more absorbent than Grade 1 Filter Paper by Whatman*. For general-purpose lab applications, monitoring specific contaminants in the atmosphere, and soil testing. Medium porosity. Medium flow rate. 8um particle retention. Exact Match 28455-222

Cytiva - Whatman 1001-320 Grade 1 Filter Paper
32.0cm diameter. For a wide range of laboratory applications, liquid clarification, gas filtration, air pollution analysis, and soil analysis. Medium porosity. Medium flow rate. 11um particle retention. Exact Match 28450-229

Cytiva - Whatman 1202-320 Grade 2V Folded Filter Paper
32.0cm diameter. Widely used for general purpose filtration. For general chemistry and soil analysis methods. Medium porosity. Medium flow rate. 8um particle retention. Exact Match 28465-102

Cytiva - Whatman 1003-320 Standard Grade Circles Grade 3
Qualitative Filter Paper. 6 um. Double the thickness of No. 1 with still finer particle retention and excellent loading capacity Exact Match 70240-016

Ahlstrom-Munksjo Filtration LLC
Mfg Item # : 6090-3200
Ahlstrom’s qualitative grades of filter paper are, by definition, recommended for use in analytical methods, which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. 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. All our qualitative grades consist of > 95% super refined a-cellulose and linter fibers. Qualitative analysis Low ash content 0.06%/li> Untreated/li> Consistent performance/li> Wet-strengthened grades available/li> Custom cut/li> Bulk packaging/li> Standard Grades (Non Wet-Strengthened) Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications. These grades contain a high level of alpha-cellulose that provides high purity but will weaken when wet. The inherent strength of standard (untreated) grades does not pose a problem when they are used in routine quadrant folded applications. We do not recommend these grades for use in vacuum work or when wet handling is required. Ahlstrom 609: 4Ým – Medium Speed This grade is an evolution of Ahlstrom 613 for use in the beer industry. This is a filter paper with an extremely low iron and nitrogen content for the analysis of protein in beer.