8260Matrix Spike Back Catalog number: 97031 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2606.20-200-T 4,5-Dihydrobenzo[a]pyrene, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 57652-66-1 Price on request 1805.12-K-IO 2,2',5,5'-Tetrachlorobenzidine, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 15721-02-5 Price on request 1160.40-100-IO n-Tetracontane, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4181-95-7 Price on request