Merck آلمان
Merck آلمان
POTASSIUM DICHROMATE VOLUMETRIC STANDARD, SECONDARY REFERENCE MATERIAL FOR REDOX TITRATION, ... CERTIPUR
MAGNESIUM MATRIX MODIFIER FOR GRAPHITE ... C(MG) = 10.0 +/- 0.2 G/L (MG(NO3)2 * 6 H2O IN HNO3 CA. 17%)