Tiosulfat de sodiu 0.1N, Tiocianat de amoniu 0.1N

actor.............................................................. uncertainty ± 0,001 1 ml = 0,0248 g Na2S2O3·5H2O 1,000 ± 0,001 This volumetric solution was checked by means of potentiometric methods using Scharlau’s potassium iodate volumetric standard. Scharlau’s volumetric standards are directly traceable to the Standard Reference Materials from NIST (National Institute of Standards and Technology, USA). • Form: liquid • Density: ~ 1,004 g/cm3 • pH (20 ºC) ~ 9 - 10 , analytical chemistry, laboratory reagent. Specifications factor............................................................. uncertainty ± 0,001 1 ml = 0,007612 g NH4SCN 0,999 - 1,001 This volumetric solution was checked by means of potentiometric methods using a silver nitrate standard solution, that was also checked against Scharlau’s potassium chloride volumetric standard. Scharlau’s volumetric standards are directly traceable to the Standard Reference Materials from NIST (National Institute of Standards