Internal & Surrogate Standard Back Catalog number: 97790 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1770.16-5MG 1,8-Diaminopyrene, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. 30269-04-6 Price on request 672825 Chlorothalonil, 250mg Price on request 3621.10-50-IO 2,7-Dichloronaphthalene, 50µg/mL, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. 2198-77-8 Price on request