Ammonia as (NH4+)

4',6-Difluoro-2,2',3,3',4,5,5',6'-octabromodiphenyl ether, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 863314-96-9

3,6-Dichloro-2-methoxy-d3-benzoic Acid, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 349553-95-3

Caffeine-13C3, 5mg