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InstrumentsRefractive Index DetectorShodex RI−201The RI-201 is a highly sensitive RI detector incorporatinga three-chamber flow cell.FeaturesA novel optical system (three-chamber flow cell) provides atleast twice the sensitivity of our previous detectors.The double temperature control method significantly reducesdrift caused by room temperature fluctuations.The limit of detection for saccharides is approximately 2ng.90Refractive Index DetectorRefractive Index DetectorShodex RI−201HFeaturesUses the same optical system as that of RI-101.Reasonable priceProduct CodeModelFlow cell typeMeasurement methodRefractive Index rangeMeasurement rangeDrift *Linearity rangeNoise **ResponseAuto zeroAuto zero rangeOff-set rangeOff-set resolutionIntegrator output(Sensitivity)Cell volume(Usual)Flow rate(Max.)Maximum back pressureInternal volumeRecorder outputExternal inputExternal OutputTemperature controlCommunication portOperator support functionWetted materialsPower source, Power consumptionDimension, WeightAccessories*Pure water 1mL/min, PURGE OFF**Pure water, response : 1.5secF4010105F4010106RI-201RI-201HAnalysis3 chamber-type 2 chamber-typeDeflection type1.00~1.750.125~256RIU 0.25~512RIU0.1μRIU/h0.2μRIU/h≥ 300μRIU≥ 600μRIU≤ 1nRIU≤ 2.5nRIU0.1, 0.25, 0.5, 1, 1.5, 2, 3, 6secFull auto zeroAll range5μRIU10μRIU25nRIU50nRIUDC 0~1V(4mV/μRIU, 16mV/μRIU)DC 0~1V(2mV/μRIU, 8mV/μRIU)8μL0.2~3.0mL/min10mL/min (solvent ; pure water)50kPaIN Cell ; 80μL IN Cell ; 60μLCell OUT ; 600μL Cell OUT ; 600μLAll (Cell OUT) ; 690μL All (Cell OUT) ; 670μL0~10mV/FS—READY (temperature control)LEAKERROR (ROM, RAM, PARAMETER, HOME-POSITION,OVER-HEAT, OPT.-BALANCE, INTENSITY)OFF, 30~55˚C (1˚C step),77˚C Temp. fuse (Double Temperature control)USBNoneStainless steel 316, Teflon, Quartz GlassAC100~240V±10%, 50/60Hz, 150VA maxW260 x D400 x H150 (mm), ca. 12kgPower cable, signal cable, connector tube,fuse, operation manualPrinciple of new optical systemmeasurementIn our previous optical system, themeasurement light passing through theflow cell was refracted only once. The newthree-chamber flow cell allows the light tobe refracted twice, thereby increasingsensitivity at least two-times at the sameoptical path length. This doubles thedefection degree and results in not onlyreduces the noise half, but reduces thedrift caused by optical systems half.3 chamber-typeflow cellRI-201mV1.51.41.31.21.11.0mV0.40.30.20.10.0-0.1θApplicationsample cell2θreference cellSucrose (20ng)Sucrose (20ng)Current 2 chamber-typeflow cellRI-100 series, RI-201H3 chamber-type flow cellFructose (20ng)Current 2 chamber-type flow cellFructose (20ng)θ