Solutii etalon conductivitate 1. S51M004 Conductivity Standard, 500 mL, 0.05% NaCl, 1015 μS/cm at 25 °C 1x261 lei 2. S51M003Conductivity Standard, 500 mL, 0.01 Demal KCl, 1408 μS/cm at 25 °C 1x261 Lei 3. S51M013Conductivity clorură de sodiu, 250 mL, 0.01 Demal KCl, 25,0 μS/cm ±5% (k=2) la 25°C 1x271 Lei /Solutii etalon pH 1. S11M002 Solutie standard pH 4.005 º0.010 la 25°C,IUPAC, Certificata, 500 mL 1x175 lei 2. S11M004 Solutie standard pH 7.000 º0.010 la 25 °C,IUPAC, Certificata, 500 Ml 1x175 lei 3. S11M007 Solutie standard pH 10.012 º0.010 la 25°C,IUPAC, Certificata, 500 mL 1x175 lei/etalonare filtru de referinta 666F7ARE