• TAPPI T437
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TAPPI T437

  • Dirt in Paper and Paperboard
  • standard by Technical Association of the Pulp and Paper Industry,
  • Publisher: TAPPI

$36.00$72.00


This method (1-3) is suited for the visual estimation of dirt in paper or paperboard in terms of equivalent black area. For dirt in pulp, see TAPPI T 213 Dirt in Pulp.

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