PCB No. 121, 1000μg/ml in Isooctane, 1ml Back Catalog number: 63121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 679277 Benzo[g,h,i]perylene, 10mg Price on request 1748.15-K-IO 3-n-Undecylthiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 129607-86-9 Price on request 0201.18-K-T Benz[a]anthracene, 1000 µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 56-55-3 Price on request