Yuav siv thiab tswj pH meter electrodes li cas
1. Lub electrode yuav tsum tau muab tso rau thiab calibrated nrog ib tug txheej txheem buffer tov uas paub pH tus nqi ua ntej ntsuas. Qhov ze dua tus nqi pH yog rau qhov ntsuas pH tus nqi, qhov zoo dua.
2. Tom qab txhua qhov ntsuas thiab ntsuas, cov electrode yuav tsum tau ntxuav tag nrho nrog dej distilled lossis deionized, thiab tom qab ntawd ntxuav nrog cov kua ntsuas ua ntej ua haujlwm tom ntej.
3. Tom qab tshem cov electrode sheath, tsis txhob sib cuag ntawm lub iav qhov muag teev ntawm cov electrode thiab cov khoom tawv, vim tias muaj kev puas tsuaj los yog khawb yuav ua rau cov electrode tsis zoo.
4. Tom qab kev ntsuas, muab tso rau ntawm lub electrode tiv thaiv npog hauv lub sijhawm. Ib qho me me ntawm cov khoom siv sab nraud yuav tsum tau muab tso rau hauv lub npog electrode kom lub qhov muag electrode moist. Tsis txhob muab tso rau hauv dej distilled.
5. Cov ntaub ntawv siv sab nraud ntxiv rau cov khoom siv electrode yog 3mol / L potassium chloride tov. Cov kua ntxiv tuaj yeem muab ntxiv los ntawm qhov me me ntawm qhov kawg ntawm cov electrode. Thaum cov khoom siv hluav taws xob tsis siv, rub lub tes tsho roj hmab kom tiv thaiv cov kua ntxiv kom qhuav.
6. Cov hlau lead-tawm ntawm cov electrode yuav tsum tau ua kom huv si thiab qhuav kom tsis txhob luv luv ntawm ob qhov kawg ntawm cov zis, txwv tsis pub nws yuav ua rau kev ntsuas tsis raug lossis tsis ua haujlwm.
7. Lub tshuab electrode yuav tsum tau muab sib xyaw nrog pH meter nrog siab input impedance (Ntau dua lossis sib npaug ntawm 1012Ω) kom tswj tau cov yam ntxwv zoo.
8. Cov electrode yuav tsum tsis txhob muab tso rau hauv dej distilled, kua protein thiab acidic fluoride tov rau lub sijhawm ntev.
9. Tsis txhob kov cov electrode nrog silicone roj.
1 0. Tom qab siv lub tshuab hluav taws xob mus ntev, yog tias txoj kab nqes pom tau tias txo qis me ntsis, qhov qis kawg ntawm cov electrode tuaj yeem soaked hauv 4% HF (3 ~ 5) s, ntxuav nrog dej distilled, thiab tom qab ntawd soaked hauv 0.1mol. /L hydrochloric acid daws. Nws yog tshiab dua.
11. Yog hais tias qhov ntsuas ntsuas muaj cov tshuaj uas tuaj yeem kis tau yooj yim rau lub teeb pom kev zoo lossis thaiv cov kua hlws ris thiab passivate electrode, txoj kab nqes yuav txo qis thiab cov ntawv nyeem yuav tsis raug. Yog tias qhov tshwm sim no tshwm sim, lub electrode yuav tsum tau muab ntxuav nrog ib qho kev daws teeb meem raws li qhov muaj kuab paug los ua kom cov electrode tshiab.
