Butyric acid, 250μg/ml in Water, 1ml

EPA Method 601 - Purgeables Mix #2

Labelled Injection/Internal Standard Stock Solution, 1.2ml, nonane

alpha-Hydroxymetoprolol, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 56392-16-6