Merck آلمان
Merck آلمان
REFRACTIVE INDEX STANDARD KIT 2 TOLUENE/WATER, TRACEABLE TO SRM FROM ... N (20 GRAD C)=1,4969 CERTIPUR
BUFFER SOLUTION (DI-SODIUM TETRABORATE), TRACEABLE TO SRM FROM NIST AND PTB PH 9.22 (20 GRAD C) CERTIPUR