MA - EPH Fractionation Surrogate Spike Back Catalog number: 51039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677817 Ethoprophos, 100 µg/ml, Acetonitrile, 1ml Price on request 1336.12-K-TX5 Acenaphthylene-d8, 1000µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 93951-97-4 Price on request EPA-1668IS Internal Standard Stock Solution, 1.2ml, nonane Price on request