Recommended practice for spectrophotometric measurement of concentrations of the disodium salt of 1-hydroxy-2-phenylazo-3,6-disulfo-7-(4´-nitrophenylazo)-8-aminonaphthalene (acid black dye N) in the air of the working zone
NORMA vydána dne 31.12.1999
Designation standards: MUK 4.1.823-99
Publication date standards: 31.12.1999
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: Russian technical standard
Kategorie: MUK