A Simple and Convenient lon-Selective Electrode for Instructional Use T h e practical use and theoretical basis of ion-selective electrodes are important tsjpics i n undrr~mduatcchtm~rtry.chemknl engiwrring, and hiulu~yInhc,rntury w u r w An rttertwe wny coenaldr iturlms togain mow tuan the wunl hlw k Ixrx frrl iw I h? ~hv.sicd~ ~ h e n c ~ ninvdwd mu III I I W ~ ~ p e r m cd m lhc%r~ m h 1-s 10 :wrdncr ftjr them t i constr&t their own electrodes. Several methods fur the construction of cheap and simple ion-selective electrodes have been reoorted.'-Vhese methods invalve ineorooratine a liauid ion-exchanee
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