4,4'-DDE, 10.0 µg/ml, Ethyl acetate, 10ml

EPA Method 502/524 Surrogate Standard #2

3, 5-Cyclocholestane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17132-01-3

n-Pentadecane, ?13C: -30.22, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-62-9