Ethofumesate-2-keto, 10.0 µg/ml, Cyclohexane, 1m

5-Fluoro-3,3',4,4'-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Perfluoro-5-oxahexanoic acid (PFMBA), 1.2ml x 50ug/ml, methanol

Citric acid [2% wt]