Olis, Inc OLIS DSM 172 model IV UV/VIS/NIR CD & CPL SPECTROPHOTOMETER 紫外/可见光/红外 圆二色/CPL光谱仪
TheOLISDSMacquisitionachieveszerodrift,near-perfectbaselineflatness,andoutstanding
S/Nquickly.Spectraldatacollectionratesstartat0.1secondperdatumduringscanningand
kineticdatacollectionratesareupto1,000pointspersecond.Allelectronicsandsoftwareare
optimizedforsensitivityandspeed,includinga16bit,500kHzanalog-to-digitalcard.Fully
digitaldesignmeansthatallsorting,summing,ratioing,logarithms,noisefiltering,etcetera,of
rawdigitaldataaredonebytheOLISCDSpectralWorksprogram,ourfullyWindows10Pro
compatiblesoftwareforprovidingmaximumprecisioninoperationanddatahandling.
Thesamplecompartmentisthe"PolarizationToolbox,"whichuniquelyoffersthefreedomto
positionthepolarizersandphotoelasticmodularnotonlyforCDbutinthosepositions
supportingCircularlyPolarizedLuminescenceandPolarizationofFluorescence.These
secondarymeasurementssupportstudyofthemoleculesintheirexcitedstateusingan
electro-opticalmethodwhichacquiresL-formatpolarizationoffluorescenceandanisotropy
directlywithoutG-factorcorrections,aswellasfluorescencedetectedcirculardichroism
(FDCD)andCPL.
Theopticalbenchisthepremiumprism-gratingdoublemonochromatorbyCARYfittedwitha
150wattxenonarclamp(the150wattlampcanbeozoneproducingorozonefree,depending
ontherequiredmeasurements),regulatedpowersupplyandignitor.ForUVCDofprotein,
peptide,nucleicacidstudies,thespectraldataareacquiredwiththebestdetectorextent:aUV
optimizedphotomultipliertube.ForNIRscanning(800-1700),anInGaAsdetectoris
included;nootherchangesarerequiredtorealizeNIRuse.
Thesinglegratingemissionmonochromatorhasopticsforthe800-1700nmregion.Emission
detectionisdonebyanexquisitelysensitiveHamamatsuNIRPMTdetector(the'Majesty')and
ared-shiftedPMT.TheMajestyisusedforacquisition900-1700nmandthered-shiftedPMT
isprovidedfor800-900nmreadings.
Thecountsstreamingfromthephotoncountingphotomultiplierarealternatelyroutedtoa'left'
counteranda'right'counterinsynchronyandinappropriatephaserelationshiptothe
operationofthePEMintheanalyzer'sopticaltrain.Leftandrightcountsareaccumulated
untilausefulsignal-to-noiseratiohasbeenachieved.CPLdataacquisitioncanlasthoursand
longer,sotheabsolutestabilityoftheOlismethodgreatlyenhancesthelikelihoodof
successfulresults.One365nmexcitationLEDisincludedwiththepricetoaugmentthelight
intensityreachingthesample.
Thesoftwareisacomprehensivedataacquisition/analysis/instrumentcontrolprogramwhichis
easytouseanddensewithusefulfunctions.Everythingfor2Dand3Ddataacquisitionand
analysisisincluded.Afterspectraareacquired,theycanbesavedasbinary,ASCII,Excel,or
JPG.Analysisoptionsincludethreepopularalgorithmsforsecondarystructuredetermination
(SELCON3,CONTINLL,andVARSLC)andanexhaustiveselectionof2Ddatamanipulation
choices(smoothing,derivatives,exponentials,subtraction,etc.)aswellaskineticfits.Three
dimensionaldataacquiredduringthermalmelts,chemicaldenaturation,andkineticstudiesare
analyzedwithSingularValueDecomposition(SVD)todeterminethenumberofspeciesinthe
reaction,followedbyDownhillSimplexandMatrixExponentiationforspectralreconstruction
ofthestarting,final,andanyspectralintermediateforms.
TheOlisSuppliedComputerSystem:OLISWindows10ControlUnitwith:AMDTurbo
CORETechnology,DualCore,AMDA6PRO-9500E/3GHz,,4GBDDR4SDRAM,500
GBHDD,AMDRadeon.Graphicsinprocessor,802.11a/cWLAN,6TotalUSBPorts(3x
USB3.0and3xUSB2.0).Windows10Pro64-bit(Englishversion),Keyboard&Mouse,
and20"orlargerLCDMonitor.
Baseoftheinstrumentdimensionsareapproximately51x22".Firstyearwarrantycoversall
issues;amodestlypricedWarrantyRenewablePackageisavailableonanannualbasis.Made
intheUSA
询价采购Olis, Inc OLIS DSM 172 model IV UV/VIS/NIR CD & CPL SPECTROPHOTOMETER 紫外/可见光/红外 圆二色/CPL光谱仪
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