Hexavalent Chromium (Cr +6)

(S)-Pregabalin, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 148553-50-8

9-trans-Hexadecenoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 10030-73-6

Parathion-methyl, 100µg/mL in Acetonitrile, 1ml