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Grade 240 is recommended for TAPPI T-205 and T-491 test methods
Standard microfiber glass grade
and related EPA and ASTM protocols
48 mm - 240 mm / 30 min
34 mm - 140 mm / 30 min
Qualitative Filter Paper - 2370-4000 - Grade 237, 40cm 95 Grade 240 is recommended forAhlstrom Munksj 237 3 m, Medium Speed This high absorbency grade is twice as thick as Grade 642 with similar particle retention. The superior absorbency offers excellent performance when used as a sample carrier. The extra thickness gives higher wet strength and loading capacity, enabling more precipitate to be held without clogging the filter. Grade 237 is also highly suitable for use in Buchner funnels and for dye filtration.
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