MA - EPH Fractionation Surrogate Spike Back Catalog number: 51039 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1073.21-K-IO n-Pentadecylcyclohexane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 6006-95-7 Price on request 2817.11-100-IO 1-Methyl-2-naphthol, 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1076-26-2 Price on request 675243 Paraoxon-ethyl, 100 µg/ml, Acetonitrile, 5ml Price on request