PCB Congeners & Hexachlorobenzene Mix #5

1,5-Bis-(1-methylethyl)-biguanide HCl, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 45095-69-0

Trifluralin, 100 µg/ml, Ethyl acetate, 5ml

ICP-MS Mix #4