EPA Method 8250 Base/Neutrals Spiking Solution

4-n-Propylbiphenyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 10289-45-9

4,4'-DDT, 100 µg/ml, Ethyl acetate, 5ml

Formaldehyde