EPA Method 8250/8250A Cal Check Cmpds Acids

2,4,5-Trichloro-4'-methoxy[13C12]biphenyl, 1.2ml x 50ug/ml, toluene

2,5-Dichloro-4-tert-butylphenol, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 52780-22-0

EPA 525 Cal Mix 1