Main : Filter Papers : Special Analytical Filters : Phosphate Free Filter Papers : MN 617 g; Round filters, fast filtration, smooth for phosphorus analysis in iron and steel works 0.20mm thick, 9s filtration speed, weight 85g per meter square
Filter Papers : Special Analytical Filters : Phosphate Free Filter Papers : MN 617 g; Round filters, fast filtration, smooth for phosphorus analysis in iron and steel works 0.20mm thick, 9s filtration speed, weight 85g per meter square
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