Selecta PH-3005 - Measurement; Measurement Preparation

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temperaturevalue,
2) Pressthe"Cal/Enter"keytoenterthecalibrationstate,andlongpressthe"Mesa/Del"keytoswitchtomanual
identificationmodeanddisplaytheword"Non",
3) PresstheupanddownkeytosetthenominalpHvalueatthecurrenttemperature,
4) If the meter is not connected to the temperature electrode, press the "Setting" key and set the current
temperaturevaluebypressingtheupanddownkey,andpressthe"Enter"keytocompletethetemperaturevalue
input,
5) Afterthedataisstable,pressthe"Enter"keytocompletethecalibration.
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Standardbuffersolutionsareusuallyobtainedintwoways,userscanprepareorpurchasestandardsolutionsby
themselves
 Customized:PleaserefertoappendixtopreparepHstandardbuffer
 Purchase standard buffers: Users can also directly purchase certified standard buffers produced by professional
manufacturers,veryconvenient.Inordertofacilitatetheuseofusersandreducealotofworkforuserstoprepare
standard solutions, our companyproducesandpreparespHstandardbuffer solutions, which users can purchase
directly.Itisveryconvenienttocalibratetheelectrodewithastandardsolutionbeforemeasurement.
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5.5 Measurement
5.5.1Measurementpreparation
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Before measurement, the user should understand the properties and attributesofthesubstance(sample)tobe
measured;themethodofroutinetesting; know the basic operationandapplicationofthemeter;knowtheuseand
maintenanceofconventionalelectrodes.
Theuserneedstopreparethesamplefirst,orthestandardsolutionthatneedstore‐calibratetheelectrode,etc.
5.5.2 Measurement
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AfterpHelectrodecalibration,pHvalueandpotentialvalueofthesolutioncanbenormallymeasured
Themetersupportstworeadingmodes:continuousmeasurementmodeandbalanced measurement mode. If it isa
balancedreadingmode,afterthedataisstable,themeterwillautomaticallylockthemeasurementresults(thelocksignwill
be displayed, and the measurement results will not change); the user can press the "measure" key to start the next
measurement.IfyouneedtocontinuouslymonitorthepHvalueandmVvalueofthesolution,youshouldusethecontinuous
measurementmode.
Themeasurementstepsareasfollows(forreference):
1) Immersetheelectrodeinthesolutiontobemeasured,
2) Iftheinstrumentisnotconnectedtoatemperatureelectrode,useathermometertomeasurethetemperature
valueofthecurrentsolution,andthenmanuallysetthetemperaturevalue,
3) Waitforthedatatostabilize,andthenreadthemeasurementresults,
4) Inthemeasurementstate,pressthemodekey"mV/pH"toswitchthemVvalueorpHvaluedisplay,