EPA Method 551.1 Performance Check Soln

Clopyralid, 250mg

2,6-Di-tert-butyl-4-methylphenol (2,6-Bis(1,1-dimethylethyl)-4-methylphenol), neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 128-37-0

o, m, & p-Xylenes