Filter paper and board. Method for determining leak-tightness
NORMA vydaná dňa 1.1.1989
Designation standards: GOST 21956-88
Publication date standards: 1.1.1989
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: Russian technical standard
Kategória: Technické normy GOST