EPA Method 8270C Mix #27

2,5-Dimethylphenol, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 95-87-4

1,7-Heptanedicarboxylic acid (Azelaic Acid), 250mg

2,4',5-Trichlorobiphenyl, 100 µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 16606-02-3