TAPPI T 227 OM 2009

A 13-page TAPPI test method for measuring pulp freeness and drainage behavior using the Canadian standard method.

TAPPI T 227 om-09, Freeness of pulp (Canadian standard method), is a 13-page PDF test method for determining the drainage rate of dilute pulp suspensions. The document provides specifications for the freeness tester and related equipment, guidance on instrument care and calibration, sampling and pulp disintegration procedures, test instructions, consistency and temperature corrections, reporting requirements, and precision data for different pulp types. It also includes correction tables, apparatus figures, keywords, literature references, and related methods including PAPTAC C.1 and ISO 5267-2.

Application Scope: Intended for pulp and paper laboratories, mill quality-control operations, process-control programs, and technical personnel evaluating the freeness and drainage characteristics of mechanical and chemical pulps.