1,2,4,6,7-Pentachloronaphthalene,,,,

EPA Method 551 - Analytes Mix “B”, 2000µg/ml in MTBE, 1ml

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

2,2-Bis(4-hydroxy-13C6-phenyl)propane, 1.2ml x 50ug/ml, methanol