Arsenic (As)

1-tert-Butyl-4-ethylbenzene, 1000µg/mL, Solvent-hexane, Unit 1mL, # of units-1, Cas.no. 7364-19-4

Endosulfan , 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 115-29-7

Melamine micronized, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no.