Chlormephos, 100 µg/ml, Ethyl acetate, 5ml

2,4-D-glucoside, 5mg

n-Tricosane, ?13C: -26.71, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-1, Cas.no. 638-67-5

EPA Method 502/524 Fortification Solution