Home / Standards / GB/T 22402-2008 GB/T 22402-2008 Active Photography - Processing chemicals - Specifications for anhydrous sodium thiosulfate and sodium thiosulfate pentahydrate 摄影 加工用化学品 无水硫代硫酸钠和五水合硫代硫酸钠 Standard Type GBT ICS 37.040.30 CCS G84 Status 现行 Issue Date 2008-10-10 Implementation 2009-06-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A