EPA Method 8270C Mix #27

Butyl benzoate, 1000mg

4,4'-DDE, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 72-55-9

N-Nitropiperazine, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no.