HEPESBuffersHydrogen-Ion ConcentrationSolutionsBicarbonatesSodium-Hydrogen AntiporterElectrodesTromethamineElectrochemistryIndicators and ReagentsAluminum SilicatesElectrochemical TechniquesIon-Selective ElectrodesElectrophoresis, CapillaryPurple MembraneCitric AcidKineticsAmino Acids, NeutralCalibrationSiliconWaterIonic LiquidsAdsorptionGlassMicroscopy, Atomic ForceBiosensing TechniquesFlow Injection AnalysisOsmolar ConcentrationSolubilitySpectrophotometry, UltravioletLimit of DetectionSurface PropertiesChemistry Techniques, AnalyticalDrug Stability