=> Analysis Note :

Volumetric solution in accordance to the chapter reagents of the Pharmacopoeia (Ph Eur, USP).
Form: liquid
Amount-of-substance concentration: 0.0995 - 0.1005
Measurement uncertainty: +/- 0.0003
Water content (according to Karl Fischer): 0.1 - 0.2 %
Traceability: NIST SRM
The concentration is determined by volumetric titration and refers to 20°C.
The certified value is traceable to a primary standard from the National Institute of Standards and Technology USA (NIST SRM 723
Trishydroxymethylaminomethane) by means of volumetric standard Trishydroxymethylaminomethane (Art. 1.02408), certified by the accredited calibration laboratory of Merck KGaA, Darmstadt, Germany according to DIN EN ISO 17025.
The uncertainty is expressed as expanded measurement uncertainty with a coverage factor k=2 covering a confidence level of 95%.