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Grade 121 is recommended for the clarification of liquid suspensions loaded with fine particulates
stannic and nickel sulfide
Grade 111 is used in general laboratory filtration including atmospheric and water pollution monitoring such as intake controls
110 mm wide
(100 circles/box)
Low-Ash Hardened Paper - 3910-0700 - Grade 391, 7cm 94 Grade 121 is recommended forAhlstrom Munksj 391 2 3 m, Slow Speed This is a very fine retention filter for gravimetric analysis of very fine particles such as barium and lead sulfates, stannic and nickel sulfide, calcium oxalate and calcium fluoride.
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