Hexavalent Chromium (Cr+6), 10mg/mL in H2O, 500ml

Diphacinone-d4 (indanedione-4,5,6,7-d4),100 µg/mL,acetonitrile,1mL,

Toxaphene Mix 1, 1 ng/µl, 1ml

C20 Triaromatic sterane, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 81943-50-2