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air pollution testing
It offers fine particle retention and product stability to over 500 degrees Centigrade
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
83 mm - 220 mm / 30 min
Glass Microfiber Filter Paper - 1210-1100 - Grade 121, 11cm 151 air pollution testingAhlstrom Munksj 121 1. 0 m, Medium Speed This very thick grade offers finer particle than Grade 111 with high wet strength and loading capacity. Grade 121 is recommended for the clarification of liquid suspensions loaded with fine particulates. Grade 121 is also used in membrane pre filtration and is also found in quantification of solids, and LSC (Liquid Scintillation Counting) techniques that require high loading capacity.
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