COD Calibration Standard

2,3,4,5-Tetrabromobenzoic acid [13C6 ring], 1.2ml x 50ug/ml, methanol

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

Benfluralin, 10.0 µg/ml, Ethyl acetate, 10ml