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TAPPI T 213

Dirt in pulp – chart method

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Organization: TAPPI
Publication Date: 1 January 2010
Status: active
Page Count: 4
scope:

This method (1,2) is adapted to the numerical estimation of dirt in pulp and recycled pulp in terms of equivalent black area. 

The results will differ from those obtained by TAPPI T 246 "Foreign Particulate Matter in Pulp by Transmitted Light" (now withdrawn) in that it is the contrasting color of foreign matter rather than its opaqueness that affects the result.

An automated procedure for dirt count can be found in TAPPI T 563 "Equivalent Black Area (EBA) and Count of Visible Dirt in Pulp, Paper, and Paperboard by Image Analysis." Both this procedure and T 563 are based on Equivalent Black Area (EBA) measurement.

Document History

TAPPI T 213
January 1, 2010
Dirt in pulp – chart method
This method (1,2) is adapted to the numerical estimation of dirt in pulp and recycled pulp in terms of equivalent black area.  The results will differ from those obtained by TAPPI T 246 "Foreign...
January 1, 2010
Dirt in pulp – chart method
This method (1,2) is adapted to the numerical estimation of dirt in pulp and recycled pulp in terms of equivalent black area. The results will differ from those obtained by TAPPI T 246 "Foreign...
January 1, 2006
Dirt in Pulp - Chart Method
A description is not available for this item.
January 1, 2001
Dirt in Pulp
A description is not available for this item.
April 4, 1997
Dirt in Pulp
A description is not available for this item.
January 1, 1989
Dirt in Pulp
A description is not available for this item.

References

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