Surrogate Standard Back Catalog number: 97935 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59502 Multi-Element Internal Standard Price on request 677594 4-tert-Octylphenol-di-ethoxylate, 100 µg/ml, Acet Price on request 1873.8-K-ME 4-Methylheptane, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 589-53-7 Price on request