Internal Standard Spiking Solution, 1.2ml, nonane

N-?Methylperfluorooctanesulfo?namide,50 µg/mL,acetonitrile,1mL,

Paraoxon-ethyl, 100mg

2,4',5-Tribromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59080-36-3