Citric acid monohydrate, 100mg

2,2',3,3',4,4',5,6,6'-Nonabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 437701-79-6

Coumarin, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 91-64-5

EPA Method 502/524 Surrogate Standard #3, 2000µg/ml in MeOH, 1ml