Clopyralid, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 674027 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 673881 Paraoxon-ethyl, 10 µg/ml, Cyclohexane, 10ml Price on request 682235 2,2',4,4'-Tetrahydroxybenzophenone, 500mg Price on request EPA-23CS1-5 EPA Method 23 Calibration Kit, 5 ampoules, nonane Price on request