EPA Method 624 Internal / Surrogate Standard

Irbesartan-d4 (2,3,5,6-phenyl-d4),ca. 100 µg/mL,MeOH,1mL,

Chlorpromazine hydrochloride,1000 µg base/mL,MeOH,1mL,

Tricresylphosphate, certified, 0.25g