GB 2139-1980

Determination of lead content in tellurium--Dithizone-carbon tetrachloride extraction photometric method

NORMA vydaná dňa 1.1.1980

The information about the standard:

Designation standards: GB 2139-1980
Note: NEPLATNÁ
Publication date standards: 1.1.1980
Country: Chinese technical standard
Kategória: Technické normy GB