EPA method 8270C calibration std kit

2,6,9-Trimethylphenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 66271-32-7

1-(3,4-Dichlorophenyl)urea

2-Acetylpyrazine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-, Cas.no.