beta-HCH, 100 µg/ml, Acetonitrile, 5ml

2,2',3',4,4',5,5'-Heptachloro-3-biphenylol, 1.2ml x 50ug/ml, nonane

2,2'-Ethylidenebis(4,6-di-tert-butylphenol), 250mg

EDDP perchlorate,1000 µg/mL (as pyrrolinium) ,MeOH,1mL,