核桃
第4楼2010/08/14
UOP 831 Hydrocarbons in Sulfolane (Set of 10)
The standard contains Benzene, Toluene, Ethylbenzene, Cumene, n-Nonane in a Sulfolane matrix at concentrations of 10 ppm wt.
http://spectrumstandards.com/store/benzene-and-aromatic-standards/uop-831-hydrocarbons-in-sulfolane-set-of-10.html