Internal Standard

Forafac 1157N, Amphoteric perfluorinated surfactant, Perfluoroalkyl betaine, 27 % , neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 133875-90-8

1,3-Bis(4-nitrophenyl)urea, 50mg

Isooctane, neat, Solvent-neat, Unit 5mL, # of units-1, Cas.no. 540-84-1