Hexavalent Chromium (Cr +6)

2,3,3',4,5,5',6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL,

Norfloxacin, 100 µg/ml, Methanol, 1ml

2,2',3,4,4',5,5',6-Octabromobiphenyl