Standard: PAPTAC - C.8P


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This method describes a procedure for the rapid removal of latency in mechanical pulps prior to physical testing (Ref. 4). Use this procedure with pressure groundwood, refiner mechanical, chemimechanical, and chemithermomechanical pulps. Some stone groundwood may have a small degree of latency which may require removal for accurate pulp evaluation (Ref. 1). Use this procedure after high yield pulps have been refined at high consistency (e.g., high consistency reject refining in a groundwood mill). It may also be used on any pulp sample taken downstream of refiners (i.e., screens, cleaners, reject refiners, etc.).

Warning: The lignin in high yield pulps will cause the pulp to darken due to the heat that is applied. Therefore this procedure should not be used if optical properties (brightness) are to be measured.

Organization: Pulp and Paper Technical Association of Canada, Formerly CPPA
Document Number: c.8p
Publish Date: 2011-04-01
Page Count: 4
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
C.8P Change Type: Update Date: 1997-07-01 Status: INAC
C.8P Change Type: Update Date: 1984-01-01 Status: INAC

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