Anthracene, 10μg/ml in Cyclohexane, 10ml

2,7-Dichloro[13C12]dibenzo-p-dioxin, 1.2ml x 50ug/ml, toluene

MCPB, 1000µg/mL in MTBE, 1ml

Mono-n-butyl phthalate (ring-1,2-13C2, dicarboxyl-13C2, 99%) 100 µg/mL in MTBE, 1,2ml