Isocarbophos, 100 µg/ml, Acetonitrile, 1ml

2,2',3,4,4',5',6-Heptabromo[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane

4-Nonylphenol (techn.), 100µg/ml in MeOH, 5ml

Method 532 Surrogate Standard