原文由 smallshark 发表:
用美国HACH的测COD仪用什么标准?专家有介绍说要EPA的标准,有谁知道吗?
原文由 doxw0323 发表:原文由 smallshark 发表:
用美国HACH的测COD仪用什么标准?专家有介绍说要EPA的标准,有谁知道吗?
ASTM D1252-00 水化学氧需要量(重铬酸盐氧需要量)的测试方法
This standard is issued under the fixed designation D 1252; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.