13C3-Caffeine, 100 µg/ml, Methanol, 1ml Back Catalog number: 681491 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 674901 Phenacetin, 250mg Price on request 66005 2,3-Dichlorobiphenyl (5) Price on request 50258 BOD Calibraton Standard Price on request