for qualitative measurementsBenzene . 2 mL Toluene . 2 mLo-Xylene . 2 mLm-Xylene . 2 mLp-Xylene . 2 mL Indane . 2 mL Indene . 2 mL Tetralin . 2 mLDecalin (decahydronaphthalene) . 2 mL Biphenyl (2% w/v in p-Xylene) . 2 mLBibenzyl (2% w/v in p-Xylene). 2 mL