EPA Method 502/524 Fortification Solution

tert-Butyl ethyl ether + blank RFA, 15Wt%, Solvent-neat, Unit 10mL, # of units-2+1, Cas.no. 637-92-3

4,6-Dinitro-2-methylphenol (2-Methyl-4,6-dinitrophenol), 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 534-52-1

Biperiden Hydrochloride (Mixture of diasteromers)