GRO Mixture 1 9 Analytes, each 2000 µg/mL in methanol; units:1x1mL, 1x5mL 1300.6 Benzene [71-43-2] 0711.10 Naphthalene [91-20-3] 1264.7 Toluene [108-88-2] 1236.6 3-Methylpentane [96-14-0] 1268.8 Ethylbenzene [100-41-4]