GB/T 36084-2018(\u82f1\u6587\u7248)
纳米技术 水溶液中铜、锰、铬离子含量的测定 紫外-可见分光光度法
GB/T 36084-2018
Nanotechnology—Determination of copper, manganese and chromium ions in aqueous solution—Ultraviolet-visible spectrophotometry
T/SDAQI 064-2021
EN 16711-2:2015
T/NAIA 0139-2022
T/SDAQI 063-2021
\u0413\u041e\u0421\u0422 \u0420 8.641-2013
State system for ensuring the iniformity of measurements. State verification scheme for measuring instruments of the water solutions ion content by electrochemical methods (pX measuring instruments)
\u0413\u041e\u0421\u0422 \u0420 8.641-2008
State sysem for ensuring the iniformity of measurements. State verification scheme for measuring instruments of the water solutions ion content by electrochemical methods (pX measuring instruments)
ISO 2226:1972
Formaldehyde solutions for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method