Phthalic acid, bis-2-ethylhexyl ester, certified, 0.5g

N-(4-chloro[13C6]phenyl)-N'-(3,4-dichloro[13C6]phenyl)[13C]urea , 1.2ml x 50ug/ml, methanol

1,2,3,4,6,7-Hexachloronaphthalene, 50µg/ml in nonane, 1,2ml

CLP - Semi-Volatile Acid Standard