TAPPI T 236 om-13 provides a standardized method for measuring the kappa number of chemical, semi-chemical, unbleached, and semi-bleached pulps. The document explains the significance of kappa number as an indicator of residual lignin and pulping completeness, and it details the required apparatus, reagents, sampling, specimen preparation, test procedure, calculations, reporting requirements, precision data, and guidance for process sample use.
This 9-page PDF is intended for pulp and paper laboratories, mill quality control teams, technical managers, and professionals who need a recognized TAPPI/ANSI procedure for evaluating pulp delignification and bleachability.
Application Scope: Applies to laboratory testing of many chemical, semi-chemical, unbleached, and semi-bleached pulps within the kappa number range of 1 to 100, with additional guidance for process testing and automated measurement verification.
