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See Chinese contents: GB/T 15344-2020 GB/T 15344-2020: Methods for physical test of talc
This Standard specifies the methods for physical test of talc moisture, dust content, pH value of water extract, sedimentation velocity, true density, fineness of grinded talc powder, wet whiteness, bulk density, fineness of fine and ultrafine talc powder, magnet extract, apparent density, scraper fineness, oil absorption and burnt whiteness, etc. This Standard is applicable to natural talc lumps and talc powder.
