3,5-Dibromophenol, 1.2ml x 100ug/ml, toluene

4-Methylphenol, 100 µg/ml, Methanol, 5ml

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

Conductance @ 20°C [200 µmho/cm]