D4-4-n-Nonylphenol, 100 µg/ml, Acetone, 1ml

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

Interference Standard 4

1,8-Dinitropyrene, 100µg/ml in Toluene, 1ml