
pH/TemperatureProbe
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Part No. 78088-00
55226.R004.042016
1 of 3
GENERALDESCRIPTION
TheMVPICON®pH/TemperatureProbeissemi‐conductor
designedforgeneralpurposepHmeasurementofliquidsor
semi‐solidsrangingfrom0–14pH.Temperature
measurements,rangingfrom0–80°C,maybetaken
simultaneously.Theprobefeaturesasilver/silverchloride/
potassiumchloridereferencesystemandathermistorwith
automatictemperaturecompensation.Solid‐state
componentrybuiltintotheMVPICONinstrumentcontrols
thissensingelement.TheMVPICONpH/Temperature
ProbeisdesignedforusewiththeMVPICONinstrument
only.Anyothercombinationmightcauselossof
performanceorirreversibledamagetobothprobeand
instrument.
PartNo:78088‐00
KITCOMPONENTS
EachkitcontainsoneMVPICONpH/TemperatureProbe
andasoftbristlebrushforcleaningthesensoronthetip.
TESTPROCEDURE
A. UsingtheMVPICONpH/TemperatureProbe
Note:TheMVPICONpH/TemperatureProbemustbe
calibratedforpHpriortofirstuse.SeeB.Calibrationfor
pHfordetails.
(a) Removeandsavetheprotectioncaportubefromthe
probetippriortouse.
Note:Referencegelmaybeobservedasaviscous
materialonthetipoftheprobe.Somegelseepagefrom
anewprobeisnormalandwillnotaffectthelongevity
orperformanceoftheprobe.
(b) Priortoeachdayofuse,scrubtheprobetipwithasoft
bristledbrush(included)anddeionizedwatertoremove
possibleresidues.Useamilddetergentifrequired.
(c) Iftheprobehasnotbeenusedfor2ormoredays,clean
asabove,soaktipinsaturatedKCI(potassiumchloride)
solution(seeOPERATINGTIPS)for10‐15min,then
soakinpH7.00orpH4.00bufferforatleast10min.
(d) EnsuretheprobeissecurelyconnectedtotheMVPICON
instrumentbyinsertingtheprobe’sconnectorwiththe
arrowsfacingtowardthebackoftheinstrumentandthe
whitecircularstickerfacingthefront.Insertprobeinto
thesample.FollowinstructionsontheMVPICONto
completereading.BothpHandtemperaturereadings
willbedisplayedontheinstrumentscreen.
Note:Todisconnecttheprobe,squeezebothsidesof
theconnectorwhileunpluggingfromtheMVPICON.
(e) WhenusingtheMVPICONpH/Temperatureprobewith
semi‐solids,insertprobesothatbothsensorandporous
whiteplugonoppositesideofprobetiparecontacting
orimmersedinthesample.Rotatelefttorightseveral
timesandtilttoensureconstantcontactwiththe
sample.
(f) Toensurecorrectmeasurementvalues,samplesor
buffersshouldbemixedwell.Thismaybedoneusinga
magneticstirrerorbygentlystirringtheprobeinthe
sampleforatleast5sec.Youmaycontinuetostirwhile
thereadingistakingplace.
(g) Theprobeshouldberinsedthoroughlywithdeionized
waterandblotteddrybetweensamples.
B. CalibrationforpH
TheMPVICONpH/TemperatureProbefeaturesa3‐point
calibrationusingpH7.00,thenpH10.00,andfinallypH4.00
buffersolutions.
Note:Useaborate‐basedpH10.00buffer(notacarbonate
basedbuffer)toensurearobustcalibrationslopeforpH
valuesabove7.00.
Note:InordertoperformaccuratepHmeasurements,the
MVPICONpH/TemperatureProbemustbecalibrateddaily
priortouse,orwhenusingadifferentMVPICONpH/
TemperatureProbe.
(a) RinsetheMVPICONpH/TemperatureProbewith
deionizedwater.SoakprobeinfreshpH7.00bufferfor
atleast2minpriortocalibration.
(b) FromtheMVPICON,enterpHmode,pressDevice,then
pressCalibration.
(c) InserttheprobeintopH7.00buffertobegin.Repeat
withfreshpH10.00andpH4.00bufferswhenprompted
ontheMVPICONscreen.Ensurebuffersarewellmixed.
(d) Rinseprobewithdeionizedwaterandblotdrybetween
buffers.
C. CalibrationforTemperature
TheMVPICONpH/TemperatureProbeusesafactory‐
calibratedthermistor.Itonlyneedstobere‐calibratedifit
hasbeenusedtomeasuretemperatures20°Caboveor
belowroomtemperature.Theprobefeaturesasingle‐point
calibrationthatcanbedoneatanyknowntemperature
withintheoperatingrange.
Note:Thecalibrationismostaccuratewhenusingaknown
temperatureclosetothesampletemperaturerange.
(a) FromMVPICON,enterTEMPERATUREmode,press
Devicemenu,thenpressCalibration.