Internal Standard Stock Solution, 1.2ml, nonane

1D,1D,2H,2H-1-Hydroxyperfluorooctane,50 µg/mL,MeOH,1mL,

2,6-Bis-(1-phenylethyl)phenol, 10mg

Diphenyl ether, 1.2ml x 50ug/ml, nonane