EPA Method 550 Analytes

Perfluoro-n-[1,2,3,4-13C4]heptanoic acid, 1.2ml x 50ug/ml, methanol

Custom mix of phthalates, 10 components each 1.00mg/mL in a suitable solvent: 8425.18 Diisopentyl phthalate (diisoamyl phthalate) 1223.24 Di-n-octyl phthalate 1226.16 Di-n-butyl phthalate 1227.19 n-Butyl benzyl phthalate 2101.20 Di-n-hexy

2,4-D, 100µg/ml in Acetonitrile, 5ml