EPA Method 525.2 - 526 Internal Standard

2-Bromodibenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 22439-61-8

2,6-Di-tert-butyl-1,4-benzoquinone

D3-2,4-D, 100 µg/ml, Acetone, 1ml