EPA Method 507 - Performance Check Solution

alpha-Zearalenol, 10.0 µg/ml, Acetonitrile, 1ml

4-n-Heptylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 59662-32-7

2,4-DB-methyl ester, 250mg