Naphthalene-d8, 100 µg/mL,toluene, 1mL

Total Residual Chlorine (Cl)

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

3-Phenoxybenzoic acid, 100mg