EPA Method 551.1 Performance Check Soln

Paroxetine hydrochloride hemihydrate, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 61869-08-7

2-tert-Butyl-4-ethylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 96-70-8

Dexamethasone-4,6alpha,21,21-d4,neat,neat,5mg