Internal Standard Stock Solution, 1.2ml, nonane

11-OH-delta-9-THC, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

gamma-Cyhalothrin, 100µg/ml in Cyclohexane, 1ml

2-n-Nonylphenol, 100 µg/ml, Acetone, 1ml