EPA Method 551.1 Performance Check Soln

4-Chloro-2-benzylphenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 120-32-1

Acid Red 2G(E128), certified, 0.1g

2,4,5-Trimethylaniline, 10mg