EPA Method 550 Analytes

2,2'-Dihydroxy-4-methoxybenzophenone, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 131-53-3

2,3,3',4,4',5',6-Heptabromodiphenyl ether, 1.2ml x 50ug/ml, toluene

1,2,4,5-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml