Monga wasayansi wa labotale, chimodzi mwazinthu zofunika kwambiri zomwe mungafune ndi pH mita. Chipangizochi ndi chofunikira kwambiri powonetsetsa kuti mumapeza zotsatira zolondola zowunikira mankhwala. M'nkhaniyi, tikambirana za pH mita, momwe imagwirira ntchito, komanso kufunika kwake pakuwunika kwa labotale.
Kodi pH Meter ndi chiyani?
PH mita ndi chipangizo chamagetsi chomwe chimagwiritsidwa ntchito kuyeza pH (acidity kapena alkalinity) ya yankho. Ili ndi probe yomwe imayikidwa mu yankho lomwe likuyesedwa, ndipo chipangizocho chimayesa mphamvu yamagetsi pakati pa probe ndi electrode yowonetsera. Kuthekera uku kumasinthidwa kukhala pH kuwerenga.
Kodi pH Meter Imagwira Ntchito Motani?
pH mita imagwira ntchito motengera mfundo ya electrochemistry. Chofufuzacho chimakhala ndi electrode yagalasi, yomwe ndi nembanemba yagalasi yopyapyala yomwe imayankha kusintha kwa acidity kapena alkalinity ya yankho. Nembanembayo imakutidwa ndi chinthu chapadera chomwe chimapanga mphamvu yamagetsi ikakumana ndi acidic kapena yankho lofunikira. Electrode yofotokozera, komano, imapereka mphamvu yokhazikika yamagetsi yomwe imagwiritsidwa ntchito ngati kuyerekezera ndi zomwe zimapangidwira ndi electrode ya galasi. Kusiyana kwa mphamvu zamagetsi pakati pa maelekitirodi awiriwa kumayesedwa ndi pH mita, ndipo kuwerengera pH kumawerengedwa.
Kufunika kwa pH Meter mu Laboratory Analysis
Mita ya pH ndi chida chofunikira pakuwunika kwa labotale, ndipo imagwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikiza:
1. Kuyesa kwachilengedwe
Poyesa chilengedwe, ma pH mita amagwiritsidwa ntchito kuyeza pH ya nthaka, madzi, ndi mpweya. Chidziwitsochi ndi chofunikira powunika momwe chilengedwe chilili komanso kuzindikira komwe kungayambitse kuipitsa.
2. Kuyesa kwa Chakudya ndi Chakumwa
M'makampani azakudya ndi zakumwa, ma pH mita amagwiritsidwa ntchito kuyang'anira acidity kapena alkalinity yazinthu zosiyanasiyana. Chidziwitsochi ndi chofunikira kwambiri powonetsetsa kuti katunduyo ndi wotetezeka kuti agwiritsidwe ntchito komanso kuti akwaniritse zofunikira.
3. Kusanthula Mankhwala
Pakuwunika kwamankhwala, ma pH mita amagwiritsidwa ntchito kuyeza pH ya mankhwala. Chidziwitso ichi ndi chofunikira poonetsetsa kuti mankhwalawa ndi okhazikika komanso ogwira mtima.
4. Chemical Analysis
Mu Chemical Analysis,pH mitaamagwiritsidwa ntchito kuyeza pH ya mayankho, kuphatikiza ma acid ndi maziko. Chidziwitsochi ndi chofunikira kwambiri pozindikira kuchuluka kwa yankho ndikuzindikira zomwe zingachitike.
Mitundu ya pH Mamita
Pali mitundu iwiri ikuluikulu ya pH mita: analogi ndi digito.
Analogi pH mita
Analogi pH mamita ndi mtundu wa pH mita, ndipo amagwiritsa ntchito singano ndi sikelo kusonyeza pH kuwerenga. Mamita awa ndi otsika mtengo poyerekeza ndi mita ya digito, koma ndi olondola komanso osalondola.
Digital pH Meters
Digital pH metres ndi mtundu wamakono wa pH mita, ndipo amagwiritsa ntchito chophimba cha LCD kuwonetsa pH kuwerenga. Mamita awa ndi olondola komanso olondola kuposa ma analogi, koma ndi okwera mtengo.
pH Meter Calibration
Kuwerengera ndi gawo lofunikira pakuwonetsetsa kuti mita ya pH imawerengera zolondola komanso zolondola. Kuwongolera kumaphatikizapo kusintha mita kuti igwirizane ndi pH ya njira yodziwika bwino. Kuti muyese pH mita, mudzafunika njira zokhazikika zodziwika bwino za pH. Mayankho awa akuyenera kuphimba mitundu yosiyanasiyana ya pH yomwe mudzakhala mukuyesa. Mita ya pH imayikidwa koyamba kuti ikhale ya acidic kapena yoyambira, kenako imasinthidwa ku mayankho otsala kuti pH ichuluke.
Kusamalira pH Mamita
Kusamalira bwino pH mita ndikofunikira pakuwonetsetsa kuti imawerengera molondola komanso molondola. Malangizo ena osungira pH mita ndi awa:
- Kuyeretsa pafupipafupi kwa probe ndi maelekitirodi
- Kusunga pH mita pamalo owuma ndi ozizira
- Kuyesa mita pafupipafupi
- Kusintha probe ndi ma electrode ngati pakufunika
Nthawi yotumiza: May-06-2023