Arsenic (As)

n-Propyl 4-hydroxybenzoate-2,3,5,6-d4, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219802-67-1

Arochlor 1260 , 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 11096-82-5

Parathion-methyl, 100µg/mL in Acetonitrile, 1ml