ANSI/TAPPI T 437 om-12

Dirt in Paper and Paperboard Technical Association of the Pulp and Paper Industry / 01-Nov-2012 / 5 pages

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This method 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.

This product replaces:TAPPI T437 om-08 - Dirt in Paper and Paperboard
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ANSI/TAPPI T 437 om-12
TAPPI T437 om-08
TAPPI T437-03
TAPPI T437