EPA Method 502/524 Fortification Solution

2,3,6,7-Tetrachloro-9H-carbazole, 1.2ml x 50ug/ml, nonane

Valproic acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 99-66-1

2,3,6-Trichlorotoluene, 100mg