Copper (Cu) Back Catalog number: 57429 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1579.4-250MG Metformin hydrochloride, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 1115-70-4 Price on request 673135 2,4-Dichlorophenol, 250mg Price on request 79245 EPA Method 8330 Analyte Price on request