EPA Method 552 Internal Standard

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

2,4',6-Trichlorobiphenyl,100 µg/mL,isooctane,1mL,

EPA 527, Surrogate Standard 3 Analytes, each 500µg/mL in Acetone; unit: 1x1mL 3478,8 1,3-Dimethyl-2-nitrobenzene [81-20-9] 2138.18 Triphenylphosphate [115-86-6] 1534.20 Perylene-d12 [1520-96-3]