EPA Method 508 - Performance Check Solution

m-Xylene, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 108-38-3

Alachlor, 1.0mg/mL in MeOH, 1ml

beta-Cyfluthrin, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 68359-37-5