Koj puas paub dab tsi yog pH meter electrode tiv thaiv kua?
Lub pH meter yog ib qho cuab yeej siv los ntsuas pH tus nqi ntawm cov tshuaj. Lub pH meter ua haujlwm ntawm lub hauv paus ntsiab lus ntawm lub roj teeb galvanic. Lub zog electromotive nruab nrab ntawm ob lub electrodes ntawm lub roj teeb galvanic yog raws li Nernst txoj cai, uas tsis yog tsuas yog muaj feem xyuam rau cov khoom ntawm electrode nws tus kheej, tab sis kuj muaj feem xyuam rau cov concentration ntawm hydrogen ions hauv cov tshuaj. Muaj kev sib raug zoo ntawm electromotive quab yuam ntawm thawj lub roj teeb thiab cov concentration ntawm hydrogen ions, thiab qhov tsis zoo logarithm ntawm cov concentration ntawm hydrogen ions yog pH tus nqi. Lub pH meter yog ib qho cuab yeej tshuaj ntsuam xyuas dav siv hauv kev ua liaj ua teb, kev tiv thaiv ib puag ncig thiab kev lag luam.
Cov tshuaj tiv thaiv ph meter electrode yog cov kua los tiv thaiv PH meter electrode, feem ntau yog tsim los ntawm potassium chloride thiab preservatives. Cov electrodes siv hauv chav kuaj yog tag nrho cov khoom siv hluav taws xob sib xyaw, uas muaj qhov zoo ntawm kev siv yooj yim, tsis cuam tshuam los ntawm oxidizing lossis txo cov khoom, thiab muaj qhov sib npaug ceev ceev. Thaum siv, tshem lub tes tsho roj hmab ntawm lub electrode filling chaw nres nkoj thiab lub tes tsho roj hmab hauv qab kawg kom tswj tau qhov sib txawv ntawm qhov sib txawv ntawm cov tshuaj potassium chloride hauv cov electrode. Cov tshuaj tiv thaiv pH feem ntau yog siv cov tshuaj saturated KCL, tab sis nws yuav tsum tau muab sau tseg tias qee cov electrodes txawv teb chaws, xws li Mettler-Tledo, Sartorius thiab Hach, siv 3mol / L KCL, thiab kev tiv thaiv kev daws ntawm qee cov electrodes Yuav tsum tau nqa cov nyiaj ions. , yog li koj yuav tsum tau nyeem cov lus qhia ua ntej npaj, paub meej tias qhov xwm txheej ntawm electrolyte, thiab tom qab ntawd xaiv seb yuav npaj li cas.
