UNE 55534:1975 SURFACE ACTIVE AGENTS. DETERGENTS. ANIONIC-ACTIVE MATTER HYDROLYZABLE UNDER ALKALINE CONDITIONS. DETERMINATION OF HYDROLYZABLE AND NON-HYDROLYZABLE ACTIVE MATTER
1975UNE 55534:1975 SURFACE ACTIVE AGENTS. DETERGENTS. ANIONIC-ACTIVE MATTER HYDROLYZABLE UNDER ALKALINE CONDITIONS. DETERMINATION OF HYDROLYZABLE AND NON-HYDROLYZABLE ACTIVE MATTER