EPA Method 551.1 Performance Check Soln

2-Acetyl-6-methoxynaphthalene, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 3900-45-6

(S)-a-Acetolactic Acid Potassium Salt, 5mg

Propyphenazone, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 479-92-5