EPA Method 8315 Calibration Mix #2

Chlorpyrifos, 250mg

2-Methylthio-3-methyl- and 2-methylthio-5-methylpyrazine, Isomer mixture, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no.

1,8-Dimethylnaphthalene, 1000µg/ml in MeOH, 1ml