Description
Description
20mm Quartz Fritted Disc, Medium. Porous fused quartz discs. Porosity sizes are as listed and differ from porosities of borosilicate discs. Porosity Pore Size (Microns) Medium (M) 15-40 Coarse (C) 40-90 Extra Coarse (XC) 150-200 . Made in the United States.
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