TAPPI T 550 OM 2013

Official TAPPI test method for determining equilibrium moisture in pulp, paper, and paperboard for chemical analysis.

TAPPI/ANSI T 550 om-13 provides a standardized procedure for determining equilibrium moisture in pulp, paper, paperboard, and related paper products before chemical analysis. The method covers applicable materials, required weighing containers, drying ovens, balances, sampling, specimen preparation, conditioning, drying and weighing procedures, moisture calculations, reporting requirements, precision information, and related standards. It is intended for laboratories and quality-control professionals who need to express chemical analysis results on a moisture-free basis. The method is not intended for determining as-received or use moisture content.

Application Scope: Suitable for pulp and paper laboratories, paperboard manufacturers, analytical testing facilities, and quality-control operations performing moisture corrections for chemical analysis.