EPA Method 8240A Calibration Check Compounds

L-PFHxS with branched isomers (Potassium Salt), 1.2ml x 50ug/ml, methanol

n-Heptadecane, ?13C: - 25.72, 150ug/ml, Solvent-cyclohexane, Unit 1mL, # of units-10, Cas.no. 629-78-7

Fensulfothion, 10.0 µg/ml, Acetonitrile, 10ml