2,3,4,5-Tetrachlorophenol, 100 µg/ml, Methanol,

EPA Method 8270C Pesticide Mix #24

Azithromycin, 1000µg/ml in MeOH, 1ml

Metoprolol (free base), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 51384-51-1