Appendix I Volatile Mix Back Catalog number: 93853 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 12172.2-2K-ME Acetonitrile-1,2-13C2,2000 µg/mL,MeOH,1mL, Price on request MCDE-3 4-Chloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request X9176 Pentachloronitrobenzene Price on request