Catecholamine Mix 2, 1000μg/ml in MeOH, 1ml

1,8-Dichloronaphthalene,50 µg/mL,isooctane,1mL,

2,2',3,3',4,4',5,6-Octabromodiphenyl ether, 1.2ml x 50ug/ml, toluene

EPA Method 502.2 Internal Standard