Low Level Hexavalent Chromium

n-Heptyl 4-hydroxybenzoate-2,3,5,6-d4, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. NA 1085-12-7 for unlabelled

Cadusafos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 95465-99-9

4-Chlorophenyl methyl sulfone, 250mg