EPA Method 8240A - Purgeable Surr Std

Vamidothion-sulfone, 100 µg/ml, Acetonitrile, 1m

3-Chloro-1,2-propandiol-1-monogadolenate, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no.

4-isopropylphenyl diphenyl phosphate, 1.2ml x 50ug/ml, toluene