Ahlstrom Standard Grade 609 Filter Qualitative Papers
|   ||Ahlstrom Grade 609 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. Filtration rate: medium. Retention: 4.0 microns.
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 α-cellulose and linter fibers.