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TAPPI UM 203
- Freeness of pulp (Williams tester)
- standard by Technical Association of the Pulp and Paper Industry, 04/15/2015
- Publisher: TAPPI
$25.00$49.00
The Williams freeness tester provides a means of measuring freeness of stock from a beater or other refining equipment. The freeness is measured as the time (seconds) for drainage of 3 g of pulp in 1 L of water (0.3%consistency) through an 80-mesh wire screen.