Raws li tus kws tshawb fawb hauv chav kuaj, ib qho ntawm cov cuab yeej tseem ceeb tshaj plaws uas koj yuav xav tau yog pH meter. Cov cuab yeej no tseem ceeb heev kom ntseeg tau tias koj tau txais cov txiaj ntsig tshuaj ntsuam xyuas tseeb. Hauv tsab xov xwm no, peb yuav tham txog dab tsi pH meter yog, nws ua haujlwm li cas, thiab nws qhov tseem ceeb hauv kev soj ntsuam hauv chav kuaj.
Dab tsi yog pH Meter?
Lub pH meter yog ib qho khoom siv hluav taws xob siv los ntsuas pH (acidity lossis alkalinity) ntawm kev daws. Nws muaj ib qho kev sojntsuam uas tau muab tso rau hauv cov tshuaj uas tau sim, thiab cov cuab yeej ntsuas qhov hluav taws xob muaj peev xwm ntawm qhov kev sojntsuam thiab cov khoom siv electrode. Qhov peev xwm no ces hloov mus rau pH nyeem ntawv.
Lub pH Meter ua haujlwm li cas?
Lub pH meter ua haujlwm raws li lub hauv paus ntsiab lus ntawm electrochemistry. Cov tshuaj ntsuam xyuas muaj cov iav electrode, uas yog nyias nyias, rhiab iav membrane uas teb rau cov kev hloov hauv acidity los yog alkalinity ntawm cov tshuaj. Lub membrane yog coated nrog ib tug tshwj xeeb cov ntaub ntawv uas generates hluav taws xob muaj peev xwm thaum raug rau ib tug acidic los yog yooj yim tov. Cov ntaub ntawv siv electrode, ntawm qhov tod tes, muab cov khoom siv hluav taws xob ruaj khov uas yog siv los ua qhov sib piv rau lub peev xwm tsim los ntawm iav electrode. Qhov sib txawv hauv hluav taws xob muaj peev xwm ntawm ob lub electrodes yog ntsuas los ntawm pH meter, thiab kev nyeem pH yog xam.
Qhov tseem ceeb ntawm pH Meter hauv Laboratory Analysis
Lub pH meter yog ib qho cuab yeej tseem ceeb hauv kev soj ntsuam hauv chav kuaj, thiab nws tau siv ntau yam kev siv, suav nrog:
1. Kev kuaj ib puag ncig
Hauv kev ntsuas ib puag ncig, pH ntsuas yog siv los ntsuas pH ntawm av, dej, thiab huab cua. Cov ntaub ntawv no yog qhov tseem ceeb hauv kev ntsuas qhov zoo ntawm ib puag ncig thiab txheeb xyuas cov peev txheej ntawm cov pa phem.
2. Kev kuaj zaub mov thiab dej haus
Hauv kev lag luam zaub mov thiab dej haus, pH ntsuas yog siv los saib xyuas cov kua qaub lossis alkalinity ntawm ntau yam khoom. Cov ntaub ntawv no yog qhov tseem ceeb hauv kev ua kom ntseeg tau tias cov khoom muaj kev nyab xeeb rau kev noj thiab ua tau raws li kev cai tswj hwm.
3. Pharmaceutical Analysis
Hauv kev tshuaj xyuas tshuaj, pH ntsuas yog siv los ntsuas pH ntawm cov tshuaj formulations. Cov ntaub ntawv no yog qhov tseem ceeb hauv kev ua kom ntseeg tau tias cov tshuaj ruaj khov thiab siv tau zoo.
4. Tshuaj ntsuam xyuas
Hauv kev tshuaj ntsuam chemical,pH metersyog siv los ntsuas pH ntawm kev daws, nrog rau cov kua qaub thiab cov hauv paus. Cov ntaub ntawv no yog qhov tseem ceeb hauv kev txiav txim siab qhov concentration ntawm kev daws teeb meem thiab txheeb xyuas cov kev cuam tshuam uas yuav tshwm sim.
Hom pH Meters
Muaj ob lub ntsiab ntawm pH ntsuas: analog thiab digital.
Analog pH Meters
Analog pH meters yog hom tshuaj pH meter, thiab lawv siv ib rab koob thiab nplai los tso saib pH nyeem ntawv. Cov ntsuas no tsis tshua kim dua li cov ntsuas digital, tab sis lawv tsis raug thiab tsawg dua.
Digital pH Meters
Cov pH ntsuas pH yog hom niaj hnub pH ntsuas, thiab lawv siv lub vijtsam LCD los tso saib pH nyeem ntawv. Cov ntsuas no yog qhov tseeb thiab meej dua li cov ntsuas analog, tab sis lawv kim dua.
Kev ntsuas pH ntsuas
Calibration yog ib kauj ruam tseem ceeb hauv kev ua kom paub tseeb tias pH meter muab cov kev nyeem kom raug thiab meej. Calibration suav nrog kev kho lub ntsuas kom haum rau pH ntawm cov txheej txheem paub daws teeb meem. Txhawm rau ntsuas pH ntsuas pH, koj yuav xav tau cov txheej txheem kev daws teeb meem nrog paub pH qhov tseem ceeb. Cov kev daws teeb meem no yuav tsum suav nrog ntau yam ntawm pH qhov tseem ceeb uas koj yuav tau sim. Lub pH meter yog thawj calibrated rau feem ntau acidic los yog yooj yim standard tov, thiab ces nws yog calibrated rau cov ntsiab lus daws nyob rau hauv thiaj li yuav nce pH.
Txhim kho pH Meters
Kev saib xyuas kom zoo ntawm pH meter yog qhov tseem ceeb hauv kev ua kom ntseeg tau tias nws muab cov ntawv nyeem raug thiab meej. Qee cov lus qhia rau kev tswj pH meter muaj xws li:
- Kev tu tsis tu ncua ntawm kev sojntsuam thiab electrodes
- Khaws pH meter nyob rau hauv qhov chaw qhuav thiab txias
- Calibrating lub 'meter' tsis tu ncua
- Hloov cov kev sojntsuam thiab electrodes raws li xav tau
Post lub sij hawm: May-06-2023