TAPPI T 563 om-21

TAPPI T 563 om-21

Equivalent Black Area (EBA) and Count of Visible Dirt in Pulp, Paper and Paperboard by Image Analysis

€52.00

Details

This method uses image analysis to determine the level of dirt in pulp, paper, and paperboard in terms of Equivalent Black Area (EBA) of dirt specks within the physical area range of 0.02 to 3.0 mm2 reported in parts per million as well as the number of dirt specks per square meter of sample. Using the algorithm prescribed in this method, the maximum dirt size is limited to 3.0 mm2. Extension to other speck sizes (for example those greater than 3.0 mm2 in physical area), may require changes in equipment, calculation procedures, or both, and is not covered in this test method. This method cannot be used for physical area measurements since it does not correctly measure the dirt specks for that mode of measurement.

Additional Info

Author Technical Association of the Pulp and Paper Industry (TAPPI)
Published by TAPPI
Document type Standard
Theme /subgroups/9488
ICS 85.060 : Paper and board
Number of pages 10
Replace TAPPI T 563 om-15,TAPPI T 563 om-12,TAPPI T563,TAPPI T563-03
Keyword TAPPI T 563 om-21