13C3-Caffeine, 10mg Back Catalog number: 680424 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 98791 Fipronil Price on request 20029 OLC 3.2 Continuing Calibration Solution Price on request 0058.24-10MG Dibenzo[a,i]pyrene[5,8]quinone, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 3302-52-1 Price on request