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TAPPI T 237
作者:TECERT 发布于:2022-12-31 19:52:42 检测认证一站式服务 收藏:Ctrl+D
摘要:TAPPI T 237 Carboxyl Content of Pulp 联系我们:info@tecert.com 安排测试 / Contact us for testing.
标准编号 Standard/Code | 标准名称 Standard Title |
TAPPI T 237 | Carboxyl Content of Pulp |
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.