Semi-volatiles standard

Bis(2,3-dibromopropyl)phosphate, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 5412-25-9

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

4-Methoxy-2',3,5,5'-tetrachlorobiphenyl, 100µg/ml in IO, 1ml