EPA Method 551.1 Performance Check Sol’n

4-Chloro-2-methylaniline, 100 µg/ml, Acetonitrile

JWH-073 N-(4-Hydroxybutyl) metabolite, 50µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. NA

Tebufenozide