Initial Check Verif. Standard 4, in 4%HNO3, 100ml

4-Methyl-1-hexylcyclohexane (cis + trans), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 92031-89-5

Trifluoroacetic Acid-13C, 10mg

(13C10)Kepone, 1.2mL x 100ug/mL, nonane