2,3,3',4,4',5,5',6-Octabromobiphenyl, 1.2ml x 50ug/ml, nonane

Methanol QC Reference Mixture III n-Butyl sulfide, 0.5 ppm (weight S by weight) in 99.9 % methanol; units: 1x10mL, 5x10mL

o-Dianisidine, 100 µg/ml, Acetonitrile, 1ml

EPA Method 525 Internals & Surrogates