Asulam, 100 µg/ml, Ethyl acetate, 5ml

Phthalic acid, bis-2-ethylhexyl ester D4, 100µg/mL in Cyclohexane, 1ml

2,2',3,4,4',5,5',6-Octachloro-3'-methoxybiphenyl, 1.2ml x 50ug/ml, nonane

EPA Method 418.1 - TPH IR Standard