EPA Method 552.1 - Surrogate Standard Back Catalog number: 31057 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8349.27-100MG Patent Blue V, Acid blue, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. Price on request 1971.12-50-IO 2,2',4,4',5,5'-Hexabromodiphenyl ether, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 68631-49-2 Price on request 9218.10-100MG N-(Pyridin-2-yl)pyridin-2-amine (2,2,'-Dipyridylamine), neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 1202-34-2 Price on request