Heptachlor-exo-epoxide, 100 µg/ml, Acetonitrile,

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 eth

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

D5-threo-Chloramphenicol, 2mg