ICP-MS Verification Standard #2

N-Ethyl-p-toluenesulfonamide, 250mg

N-methylperfluoro-1-butanesulfonamide, 1.2ml x 50ug/ml, methanol

2,3,3',5,5'-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane