TAPPI TIP 0809-01, Interconversion of freeness, is a technical information paper covering conversion relationships among Canadian Standard freeness, Schopper-Riegler freeness, Williams precision freeness, and drainage factor measurements. The document includes tabulated conversion ranges based on extensive measurements of bleached chemical wood pulp and mechanical pulp samples, with context on the limitations of applying universal conversion tables across different pulp types.
This PDF is useful for pulp and paper laboratories, process engineers, quality control personnel, and technical specialists who need practical reference values when comparing freeness or drainage results obtained from different instruments or methods.
Application Scope: Intended for reference use in pulp and paper testing environments where freeness and drainage measurements must be compared or interpreted across Canadian Standard, Schopper-Riegler, Williams precision, and drainage factor systems.
