Hexavalent Chromium (Cr +6)

2-Nitrophenol, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 88-75-5

MCPA-L-carnitine (Mixture of Diastereomers), 0,5mg

Bentazon-d7 (isopropyl-d7),100 µg/mL,acetonitrile,1mL,