EPA Method 8330 Analyte

2',3',4',5'-Tetrachloro-4-[13C12]biphenylol, 1.2ml x 50ug/ml, toluene

4-Hydroxyisophthalic acid (4-Hydroxybenzene-1,3-dicarboxylic acid), 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 636-46-4

Chlorfenvinphos, 100µg/mL, Solvent-c.hexane, Unit 1mL, # of units-1, Cas.no. 470-90-6