TAPPI T 281 SP 2012 provides a standardized technique for sampling pulp mats and liquor from open drum washers. This four-page PDF defines sampling terminology, recommended apparatus, safety precautions, sampling locations, sample handling, and collection procedures for low-consistency stock, pulp mats, and liquor.
The practice supports evaluation of washer operating parameters, including pulp consistency, dissolved solids, and chemical oxygen demand (COD). It also includes a suggested paddle design, guidance for preparing representative samples, relevant operating information for performance evaluation, and references to related TAPPI, ASTM, and PAPTEC methods.
Application Scope: For pulp and paper industry personnel, laboratory technicians, process engineers, and operators collecting samples from open drum and brownstock washers.
