EPA Method 551.1 Performance Check Soln Back Catalog number: 30114 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72616 4-Nitrophenol-d4, 1000µg/ml in MeOH, 1ml Price on request MCDE-141 2,2',3,4,5,5'-Hexachloro[13C12]diphenyl ether, 1.2ml x 50ug/ml, nonane Price on request 1224.24-K-IO Bis(2-ethylhexyl) phthalate, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 117-81-7 Price on request