Hexavalent Chromium (Cr +6)

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

(-)-beta-Pinene, 100µg/ml in MeOH, 5ml

Precision and Recovery Stock Solution: Marker PCBs, 1.2ml, nonane