EPA Method 525 - Fortification Solution

Ketoconazole, 1000μg/ml in MeOH, 1ml

4,4'-Dibromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 92-86-4

2-Hydroxy-4-methoxybenzophenone-2',3',4',5',6'-d5,neat,neat,25mg,