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Quartz meets the highest purity requirements due to the lowest possible heavy metal content
The filter media is thoroughly rinsed in a multi-stage process using copious amounts of high-purity deionized water
Prewashing with acid further reduces the content of metals to exceptionally low levels
Ahlstrom-Munksjö 151
This glass microfiber grade is a smooth surface
Glass Microfiber Filter Paper (TCLP) - 1930-0470 - Grade 193, 4.70cm 54 Quartz meets the highest purityAhlstrom Munksj 193 This grade has similar performance properties to Grade 151 and is made with acid treated borosilicate glass microfibers with inherently low levels of barium and zinc. The filter media contains no binders or other additives that may cause interference with samples. The filters resist acids and bases and have a nominal particle retention of 0. 7 m.
