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TAPPI T278 sp-04
- Pulp Screening (Valley-Type Screening Device)
- standard by Technical Association of the Pulp and Paper Industry, 11/09/2004
- Publisher: TAPPI
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This practice provides a screening procedure for pulp taken directly from the blow pit or discharged from digesters, eliminating time lapse and assuring uniform screening conditions. This pulp is washed and screened in a flat screen prior to sheet making.The practice directly measures the debris content in chemical, mechanical and recycled pulps. It can also determine flake content, providing a defibering index for the pulp at various repulping stages.