EPA Method 551.1 Performance Check Soln

1-Ethyl-2-phenylbenzimidazole, neat, Solvent-neat, Unit 10MG, # of units-8, Cas.no. 6528-75-2

EPA 527Mix 3, BDE Congeners and Hexabromobiphenyl 5 Analytes, each 50µg/mL in Isooctane:Ethyl acetate (8:2); unit: 1x1mL 3108.12 2,2’,4,4’,5,5’-Hexabromobiphenyl PBB-153 [59080-40-9] 1962.12 2,2’,4,4’-Tetrabromodiphenyl ether BDE-47 [5436-43-1] 196

L-Alanine