Custom selection of EPA 1614 PDBEs 1961.12 2,4,4’-Tribromodiphenyl ether PBDE-28 [41318-75-6] 20ng/mL 1962.12 2,2’,4,4’-Tetrabromodiphenyl ether PBDE-47 [5436-43-1] 70ng/mL 1967.12 2,2’,4,4’,5-Pentabromodiphenyl ether PBDE-99 [60348-60-9] 100ng/m