EPA Method 502/524 Fortification Solution

Isocaffeine (1,3,9-Trimethylxanthine),neat,neat,100mg,

Valve Timing Calibration Mix (without Internal Standard) 4 Analytes, each Wt.% as listed in isooctane; units: 1x10mL, 5x10mL Name Wt.% Name Wt.% Benzene 5.0 o-Xylene 10.0 Toluene 5.0 Isooctane

Metolachlor-ESA, 100µg/ml in Acetonitrile, 1ml