EPA Method 8150A - Herbicide Methyl Esters

Trixylyl phosphate, purified ion m/z 424 (heptamethyl),100 µg/mL,isooctane,1mL,

1,2,3,5-Tetrachloro[13C6]benzene, 1.2ml x 100ug/ml, isooctane

3,3',4,4',5,5'-Hexabromobiphenyl, 1.2ml x 50ug/ml, nonane