Method 4 Standard 1

Isofetamid, 25mg

2,3,3',5,5',6-Hexachlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 74472-46-1

DL-Propranolol hydrochloride, neat, Solvent-neat, Unit 25mg, # of units-1, Cas.no. 318-98-9