Mix 33, 10.0 µg/ml, Acetonitrile, 10ml

Internal Standard Solution, 1.2ml, nonane

2,4-Dihydroxybenzophenone-13C6, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 131-56-6 (unlabelled)

2,6-Dimethylnaphthalene