EPA Method 8240A Mix #2

(+/-)-Citalopram-d4 hydrobromide (4-fluorophenyl-d4), 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 1219803-58-3

Mabuterol hydrochloride, 10mg

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