Specifications | |
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Concentration after dilution to 1 liter: c(H₂SO₄) = 0.01 mol/l | |
Amount-of-substance concentration | 0.0100 mol/l |
The concentration of this solution was determined with sodium hydroxide standard solution (article number 1.09137) standardized by hydrochloric acid against volumetric standard Tris(hydroxymethyl)aminomethane (article number 1.02408). The determined titer at 20°C was 1.000 with an expanded measurement uncertainty of ± 0.004 (k=2 coverage factor for 95% coverage probability). The certified value is traceable to primary standard NIST SRM 723e (NIST: National Institute of Standards and Technology, USA) by means of volumetric standard Tris(hydroxmethyl)aminomethane, measured in the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany in accordance to DIN EN ISO/IEC 17025. |