Caffeine, 100µg/ml in MeOH, 1ml Back Catalog number: 97536 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 71882 1,4-Dioxane-d8 Price on request 2824.10-50-ME Perfluoro-3,7-dimethyloctanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 172155-07-6 Price on request 31025 Acifluorfen methyl derivative Price on request