Ophthalmic optics. Metal and combination spectacle frames. Method for the simulation of wear and detection of nickel release
NORMA vydaná dňa 1.9.2013
Designation standards: GOST R 54420-2011
Publication date standards: 1.9.2013
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: Russian technical standard
Kategória: Technické normy GOST