Formaldehyde (0.1 ppm)

2-Perfluorobutyl-[1,1,2,2-2H4]-ethanol (4:2), 50µg/ml in MeOH, 1,2ml

Fluoroacetate (FCH2COO-)

rac-(1R,2R)-1,2-dibromo-(4S)-4-((1S)-1,2-dibromoethyl)cyclohexane, 1.2ml x 50ug/ml , toluene