1 Prezentul standard stabile?te metoda de m?surare a solubilit??ii pastelor chimice fibroase ?n solu?ii reci de hidroxid de sodiu de anumite concentra?ii ?i anume: 5%, 10% ?i
18%.
2 Frac?iunea de past? chimic? cu gradul de polimerizare sub 150 (gume
STAS 6209-1967 history
1968STAS 6209-1967 Semi-finished fiber products for pulp industry. Determination of solubility in sodium hydroxide solvent