Herbicides calibration, free acids

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

n-Hexatriacontane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 630-06-8

2,2,3,3,4,5,5-Heptachlorobiphenyl,172