Tris(4-chlorophenyl)methane, 1.2ml x 50ug/ml, nonane

EPA Method 548 Calibration Solution

5-Hydroxy L-Tryptophan, 250mg

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