Metformin hydrochloride, 100 µg/ml, Methanol, 1m

3-Fluoro-2,3',4,4',6-pentabromodiphenyl ether, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 876310-26-8

Saccharin-13C6, 0,5mg

Perfluorooctane sulfonic acid, 100µg/mL in MeOH:Water, 1ml