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DA39105893 · közzétéve 20.10.2025 · lezárva 20.10.2025 · ettől: Sc Optimus Contrast Consulting Srl (Tulcea)
Soluţie tampon (fosfat diacid de potasiu/fosfat acid disodic)trasabil la SRM de la NIST şi PTB pH 7.00 (25°C) Certipur® PRODUS MERCK , COD 1094070500 Clorura de potasiu - solutie 0.01 mol/l (nominal 1.41 mS/cm) Certipur® PRODUS MERCK - COD 1012030500 Clorura de potasiu - solutie (nominal 0,147 mS/cm), material de referinta certificat pentru masurare conductivitate electrolitica (c=0.001 mol/l) Certipur®; Electrical conductivity (25?°C): 0.144 - 0.150 mS/cm; Producator Merck, cod: 1015570500