PCB No. 21, 100µg/ml in Isooctane, 1ml

Terbuthylazine, 250mg

Xanthone, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 90-47-1

3-Bromophenol, 1.2ml x 100ug/ml, toluene