EPA Method 8240A Sys Perf Check Cmpds

1,2-Dichlorotetrafluoroethane

d2 C29 alpha alpha alpha (20R)-Ethylcholestane, 100µg/mL in Isooctane, 10 x 1ml

1.2,3.4,5.6,7.8-Tetra(peri-naphthylene)anthracene, neat, Solvent-neat, Unit 1mg, # of units-1, Cas.no. 191-54-8