Group I Elements Starter Kit Back Catalog number: 52253 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677838 2-Hydroxyibuprofen, 100 µg/ml, Acetonitrile, 1ml Price on request 70979 n-Octacosane Price on request 675243 Paraoxon-ethyl, 100 µg/ml, Acetonitrile, 5ml Price on request