Hexavalent Chromium (Cr +6)

Metolachlor-d6 (propyl-d6),100 µg/mL,acetonitrile,1mL,

Di-iso-butyl phthalate (Di-2-methylpropyl phthalate), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 84-69-5

Trifluoroacetic Acid-13C, 10mg