EPA Method 551 “Mix B”

Fenthion-oxon-sulfoxide, 10.0 µg/ml, Acetonitrile

Mirtazapine, 100µg base/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 61337-67-5

2,3,5,6-Tetramethylpyrazine trihydrate, , Solvent-, Unit , # of units-, Cas.no. 76556-07-5