Formaldehyde Back Catalog number: 97052 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2344.12-50-IO 3'-Fluoro-3,4,4',5-tetrachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 71479 4'-Chloroacetophenone Price on request 9266.18-25-AN U{13C18}-Sterigmatocystine, 25µg/mL, Solvent-acetonitrile, Unit 1.2mL, # of units-1, Cas.no. Price on request