Video: Koj ua li cas ntsuas pH sojntsuam?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Calibrating Koj pH Meter . Tso koj electrode hauv buffer nrog a pH tus nqi ntawm 7 thiab pib nyeem. Nias qhov " ntsuas" lossis calibrate khawm pib nyeem cov pH ib zaug koj electrode muab tso rau hauv qhov tsis. Tso cai rau pH nyeem kom ruaj khov ua ntej cia nws zaum li ntawm 1-2 feeb.
Kuj nug, yog vim li cas pH sojntsuam yuav tsum tau calibrated?
pH meter calibration yog a tsim nyog kauj ruam ntawm kev siv a pH meter vim li cas cov electrode hloov raws sijhawm. Tsis tu ncua calibrating koj pH meter yuav kho koj electrode raws li cov kev hloov pauv uas yuav tshwm sim thiab ua kom ntseeg tau tias koj cov ntawv nyeem yog qhov tseeb thiab rov ua dua.
Ib yam li ntawd, koj puas tuaj yeem ntsuas pH ntsuas nrog dej kais dej? Cov electrodes ( pH probes) muaj cov tshuaj electrolyte, uas feem ntau yog cov tshuaj KOH. Qhov no yuav tsum tau muab tso rau tom qab ib xyoos lossis ntau dua ntawm kev pabcuam. Electrodes yog qhov zoo tshaj plaws kom ntub dej los yog ntub dej thaum lub sijhawm khaws cia. Kais dej yog tsim nyog tshaj calibration daws los yog distilled dej.
Ua li no, thaum twg yuav tsum tau ntsuas pH meter?
Rau kev ntsuas qhov tseeb (≦ ± 0.02 pH ), cov meter yuav tsum yog calibrated ua ntej kuaj txhua lub sijhawm; Rau kev ntsuas qhov tseeb dav dav (≧ ± 0.1 pH ), ib zaug calibrated , cov meter tuaj yeem siv li ntawm ib lub lim tiam lossis ntev dua.
Dab tsi yog pH calibration nkhaus?
Cov txheej txheem txheem rau calibrating pH meters yog npaj rau kev ua haujlwm linear nkhaus npe a calibration nkhaus los ntawm plotting lub peev xwm ntsuas raws li kev ua haujlwm ntawm pH lub pOH. Kev ua haujlwm ntawm lub pH electrode nyob rau hauv ib qho kev daws teeb meem alkaline yog los xyuas OH- ions, tsis yog H+ ions.
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