Chlortoluron-d6 (N,N-dimethyl-d6), 100µg/ml in MeOH, 1ml

2,2,3,4,5-Pentachlorobiphenyl (BZ-90)

n-Pentacosane, ?13C: -28.21, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 629-99-2

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