13C LABELED PCB MIXTURE PCBS-77/101/141/178 10UG/ML IN NONANE Back Catalog number: EC-4060 Availability: In the manufacturer's stock Price on request - + Recommended 678302 1,2-Dinitrobenzene, 250mg Price on request 1115.18-100-TX5 6-Nitrochrysene-d11, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 203805-92-9 Price on request 2517.8-K-ME Caffeine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 58-08-2 Price on request