Caffeine, 100µg/ml in MeOH, 1ml Back Catalog number: 97536 Manufacturer: ABSOLUTE STANDARDS Availability: 3 weeks Price on request - + Recommended 675093 Sodium p-n-tridecylbenzenesulfonate, 10mg Price on request 73013 Tetrahydrothiophene Price on request PN-2S 2-Chloronaphthalene, 1.2ml x 50ug/ml, nonane Price on request