Home / Standards / GB/T 9984.6-2004 GB/T 9984.6-2004 Sodium tripolyphosphate for industrial use — Determination of iron content — 2,2'-Bipyridine spectrophotometric method 工业三聚磷酸钠 铁含量的测定 2,2`-联吡啶分光光度法 Standard Type GBT ICS N/A CCS N/A Status N/A Issue Date N/A Implementation N/A Responsible Dept N/A Drafting Unit N/A