EPA Method 551.1 Performance Check Sol’n

1,3,8,9-Tetrachlorodibenzo-p-dioxin, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no.

Tartrazine (E102), neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1934-21-0

2-Naphthol