EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 70219 Mevinphos Price on request 50660 ICP Cal RL Stock HM Price on request 3092.12-50-IO 2,2'-Dibromobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 13029-09-9 Price on request