Theobromine, 100µg/ml in MeOH, 5ml

4-n-Nonylphenol (ring13C6) (same as S-4376-1-5AC), 1µg/ml, Solvent-Acetone, Unit 4.5ml, # of units-1, Cas.no.

1,2,3,4,6,7,9-Heptachloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

Halogenated Volatiles #2 (Gases) - MISA