Extech Instruments ExStik DO600 User Manual page 9

DOBondedMembraneCapreplacement
ImportantNote:Donottouchthemembraneasskinoilswillinterferewiththeoxygen
permeabilityrateofthemembrane.Usecautionwhenreplacingthebondedcap.
1. Itisrecommendedthattheelectroderemainattachedtothemeterduringthis
replacementprocess.
2. Toremovethebondedcapfromtheelectrode,unscrewthecapfirmlyandcarefully
counter‐clockwisefromtheelectrode(seediagrambelow).
3. Discardtheusedcap.PleaseNote:Theinstallationofabondedcapcausesthemembrane
tobetightlystrechedoverthecathode.Onceabondedcapisremovedreinstallationisnot
possibleasthemembranewillnolongerbeproperlystrechedoverthecathode.
4. RinsetheoldelectrolytesolutionfromtheCathodeandAnodebeforecontinuing.
5. UsethesuppliedPolishingPaper(SeeAccessoriestable)toclean,polish,shine,and/or
removescratchesfromthecathode.Besuretomoistentheclothbeforepolishingthe
cathode.Donotover‐polishthesensitivegoldcathode.
6. Setthenewreplacementbondedcaponaflatsurface.Leavethecapinthisposition
throughoutthereplacementprocess.
7. Fillthebondedcapwiththeelectrolytesolutionuptothebottomofthethreadsonthe
insideofthecap.
8. Tapthesideofthebondedcaptohelpjarfreeanytrappedairbubblesfromtheelectrolyte
solution.
9. Keepingthecapinafixedpositiononaflatsurface,carefullyinserttheelectrodeintothe
newbondedcapbyfirstdippingandremovingtheelectrodeseveraltimesfromthecap.
Witheachdip,pushtheelectrodeprogressivelydeeperintothebondedcap.Finally,screw
theelectrodeslowlyontothebondedcap(clockwise)untilfullytightened.Thedippingand
removaltechniqueminimizestheintroductionofairbubblesintotheelectrolytesolution.
Airbubblesintheelectrolytecancompromisemeasurements.
10. Duringthetighteningofthebondedcap,excesselectrolytesolutionwillleakout,thisis
normalanddesireablesinceitminimizestheintroductionofairpockets.Cleanoffthe
excesselectrolytebeforeuse.
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Clockwise to tighten
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Counter-clockwise to loosen
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BONDED CAP
9
Electrode
Anode
Cathode
Bonded Cap
Air Vents
DO600-en-GB_V7.4 12/16