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Typical levels of trace elements in Grade 26
Medium Speed
Grade 55 is also used in air and foodstuffs analysis and for chloride and phosphorous in cement
Grade 111 is also well suited for filtration of water and protein
and large seeds
Glass Microfiber Filter Paper - 1410-1250 - Grade 141, 12.50cm 55 Typical levels of trace elementsAhlstrom Munksj 141 3. 1 m, Fast Speed This grade offers better filtration speed and a higher loading capacity than an analytical filter paper of similar particle retention. Grade 141 is particularly recommended for pre filtration of membrane filters and is also used in combination with Grade 121 as a highly efficient protective and retentive grade density pre filter for membrane filters.
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