EPA Method 531.1 - Analytes Mixture

Methamidophos, 100μg/mL in Acetonitrile, 1ml

Bifenox, 1000µg/ml in MeOH, 1ml

Bis(4-methyl-2-pentyl) phthalate-3,4,5,6-d4, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1398066-13-1