Standard: PAPTAC - C.8P
LATENCY REMOVAL BY HOT DISINTEGRATION (DOMTAR METHOD)
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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|
|Most Recent Revision:||YES|
|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|
Standards That Reference This Standard
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