13C3-Caffeine, 10mg Back Catalog number: 680424 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended EPA-537PDS-R1 EPA Method 537 Analyte Primary Dilution Standard, 2000ng/ml in MeOH, 1,2ml Price on request 91848 Semi-Volatile Standard Price on request C20000800 PCB No. 8 certified, 25mg Price on request