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TAPPI T237
- Carboxyl Content of Pulp
- standard by Technical Association of the Pulp and Paper Industry,
- Publisher: TAPPI
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This method describes a procedure for the determination of the content of carboxyl groups in bleached and delignified pulps. Lignin and lignin degradation products, especially sulfonic acid groups in sulfite pulps (1) interfere with the determination of carboxyl content, and the method is not applicable to unbleached and semi-bleached pulps.