Yuav ua li cas siv cov electrode ua ke ntawm pH meter?
Yuav tsum tsis muaj npuas nyob rau pem hauv ntej kawg ntawm npuas. Yog tias muaj npuas, lawv yuav tsum tau muab pov tseg.
Tom qab tshem cov electrode los ntawm lub raj mis soaking, nws yuav tsum tau shaken thiab shaken qhuav nyob rau hauv dej deionized. Tsis txhob so lub teeb nrog cov ntaub so ntswg, txwv tsis pub cov nqi hluav taws xob zoo li qub yuav hloov mus rau cov iav zaj duab xis, uas yuav ua rau lub sijhawm ntev rau lub peev xwm ruaj khov. Ib txoj hauv kev zoo dua yog yaug cov electrode nrog cov tshuaj ntsuam xyuas.
Tom qab muab cov pH sib xyaw electrode rau hauv cov tshuaj ntsuas, nws yuav tsum tau nplawm thiab shaken ob peb zaug ua ntej muab tso rau tseem, uas yuav ua kom cov lus teb ntawm electrode. Tshwj xeeb tshaj yog thaum siv lub plhaub yas pH composite electrode, lub nplawm thiab co yuav tsum hnyav dua vim tias muaj cov kab noj me me ntawm lub teeb thiab lub plhaub yas. Tom qab cov electrode yog immersed nyob rau hauv cov kev daws teeb meem, qee zaum cov roj hauv cov kab noj hniav tsis tuaj yeem raug tshem tawm hauv lub sijhawm, ua rau muaj npuas thiab kev sib cuag tsis zoo ntawm lub teeb los yog kua interface thiab kev daws teeb meem. Yog li ntawd, nws yog ib qho tsim nyog yuav tau do thiab co lub zog kom tshem tawm cov npuas.
Tom qab kuaj hauv cov qauv viscous, cov electrode yuav tsum tau rov qab yaug nrog dej deionized ntau zaus kom tshem tawm cov qauv uas ua rau cov iav zaj duab xis. Qee lub sij hawm nws yuav tsum tau ntxuav cov qauv nrog lwm cov kev daws ua ntej, tom qab ntawd yaug tawm cov kuab tshuaj nrog dej, thiab muab tso rau hauv cov kua dej kom ua kom muaj zog.
Tsis txhob sib cuag nrog cov kua qaub, alkalis, lossis corrosive daws. Yog tias kuaj cov kev daws teeb meem zoo li no, sim txo lub sij hawm immersion thiab ua tib zoo ntxuav lawv tom qab siv.
(6) Tsis txhob siv rau hauv lub cev qhuav dej xws li anhydrous ethanol thiab concentrated sulfuric acid, uas yuav ua rau cov txheej txheem ntawm hydrated gel kub them rau ph meter (acidity meter) ntsuas.
Lub plhaub khoom ntawm lub plhaub yas pH sib xyaw electrode yog PPS. Nyob rau hauv cov ntaub ntawv ntawm kev puas tsuaj rau lub plhaub electrode nruab nrab, ib tug pH puas electrode nrog lub iav plhaub yuav tsum tau siv xwb.
