ISO 6344 is aninternational standard covering the materials sizes and tests regardingsandpaper and other similarcoated abrasives.

It has three parts:

• ISO 6344-1:1998: Grain size distribution test
• ISO 6344-2:1998: Determination of grain size distribution of macrogrits P12 to P220
• ISO 6344-3:1998: Determination of grain size distribution of microgrits P240 to P2500

• ISO.org

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