Ahlstrom 6090-1500 Qualitative Filter Paper, 15 Cm Diameter, 4 Microns, Medium

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. 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. Qualitative analysis, low ash content 0.06 percent, untreated, consistent performance, wet-strengthened grades, custom cut. 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.

Product Features

  • Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance
  • Qualitative grades consist of greater than 95 percent super refined a-cellulose and linter fibers
  • Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications
  • 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



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