1,2-Bis(2,4,6-tribromophenoxy)ethane, 1.2ml x 50ug/ml, nonane

Perfluoro-n-[1,2-13C2]undecanoic acid, 1.2ml x 50ug/ml, methanol

Thifensulfuron-methyl, 1000µg/ml in Acetone, 1ml

EPA O-FID Quantitative Calibration Check Standard (without Internal Standard) 4 Analytes, each Wt.% as listed in RFA Gasoline; units: 1x10mL, 5x10mL Name Wt.% Name Wt.% Methanol 4.0Methyl tert-butyl et