Internal Standard

2,4-Dinitroanisole, 1000µg/mL, Solvent-isopropanol, Unit 1mL, # of units-1, Cas.no. 119-27-7

CPI (1) Control Standard 2 Isooctane solutions S-4025 (mg/mL) S-4026 (mg/mL) S-4027 (mg/mL) C22 1.0 1.0 1.0 C23 0.9 1.0 1.1 C24 0.8

2,4'-DDE, 100µg/mL, Solvent-dichloromethane, Unit 1mL, # of units-1, Cas.no. 3424-82-6