Lithium (Li)

Methyl 8-cis,11-cis,14-cis-eicosatrienoate , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 21061-10-9

Hexavalent Chromium (Cr 6+)

Norcocaine hydrochloride, 100µg/ml in MeOH, 1ml