Method 1666 Standard

4-Ethylphenol, 100 µg/ml, Methanol, 1ml

2,2',3,5',6-Pentachloro[13C12]biphenyl, 1.2ml x 50ug/ml, nonane

Dibenzothiophene in Xylene Units: 5x1mL ampoule, 1x10mL screw cap bottle Chiron No. (Matrix) Concentration Isooctane Xylene White oil 3 cst µgS/g (ppm) Wt.% S-4055-0-IO S-4054-0-XY S