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Grade 131 is recommended for the collection of suspended solids in potable water and in industrial wastes
The filter media contains no binders or other additives that may cause interference with samples
42 mm - 150 mm / 30 min
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 temperature resistance makes Grade 169 well-suited for suspended solids determination
Low-Ash Hardened Paper - 3910-1100 - Grade 391, 11cm 1765 Grade 131 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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