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 1811.12-50-T Decabromodiphenyl ether, 50µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 1163-19-5 Price on request PF4OPEA Perfluoro-4-oxapentanoic acid (PFMPA), 1.2ml x 50ug/ml, methanol Price on request 38224 AK102 DRO C10-C25 in Water PT Price on request