EPA Method 531.1 - Performance Check Solution

Tebutam, 100µg/ml in Acetonitrile, 5ml

1,2-Dimethyldibenzothiophene, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 31317-14-3

Zirconium (Zr)