Puas yog koj lub pH meter electrode puas zoo? Ua li no kom paub meej qhov ntsuas ntawm cov electrode
H meter (tseem hu ua pH meter) yog cov kua pH ntsuas ntsuas feem ntau siv hauv chav kuaj. Cov electrode yog ib qho tseem ceeb ntawm pH meter. Thaum ntsuas, nws yog qhov tseem ceeb rau ntxig cov electrode rau hauv cov kua thiab xa rov qab cov ntaub ntawv kom raug txiav txim siab pH tus nqi ntawm cov tshuaj. Kev tu ntau zaus, tu thiab tshuaj xyuas cov electrodes yog qhov tsim nyog los xyuas kom meej qhov ntsuas.
Yog li, koj yuav qhia li cas yog tias lub ntsuas pH ua haujlwm zoo? Tus Thawj Saib Xyuas Kev Muag Khoom Souk tau nug txog cov ntaub ntawv xov xwm ntawm cov kws tshaj lij pH meter manufacturers, thiab txheeb xyuas cov kev txiav txim hauv qab no thiab cov khoom siv electrode rau koj:
Thawj tus txiav txim seb lub pH meter nws tus kheej ua haujlwm li cas: ntxig lub luv-circuit plug (lub taub hau lub teeb Q9 interface) txuas rau lub ntsuas mus rau txoj hauj lwm uas pH electrode txuas nrog lub ntsuas. Yog tias lub ntsuas ntsuas pom txog 0-20mV lub sijhawm no, nws txhais tau hais tias lub peev xwm ntawm pH meter tsis muaj teeb meem. Koj tuaj yeem rub tawm lub luv-circuit plug los xyuas seb cov electrodes puas tuaj yeem ua haujlwm zoo li qub.
1. Npaj cov txheej txheem kev daws teeb meem nrog pH qhov tseem ceeb ntawm 4.00, 6.89, thiab 9.18.
2. Nruab lub pH meter electrode, thiab muab cov electrode rau hauv peb txheej txheem tsis daws teeb meem rau calibration. Lub peev xwm sib xws ntawm peb txoj kev daws teeb meem yog 177 ± 30mv, 8 ± 30mv, thiab 129 ± 30mv raws.
3. Tom qab lub calibration, ntxuav lub electrode thiab muab nws rov qab rau hauv cov txheej txheem buffer tov los ntsuas nws tus nqi pH. Yog tias tus nqi pH tso tawm tsis tshaj ±0.02 ntawm tus qauv tus nqi, nws txhais tau tias cov electrode yog qhov qub. Txwv tsis pub, lub electrode yog faulty.
Lub neej kev pab cuam ntawm pH meter electrode yog ze ze rau qhov xwm thiab kub ntawm cov qauv ntsuas, nrog rau qhov zaus ntawm kev siv thiab kev saib xyuas ntawm electrode. Yog tias khaws cia kom zoo, lub neej kev pab cuam ntawm pH meter electrode feem ntau yog 1 txog 2 xyoos. Kev saib xyuas kom zoo yuav xyuas kom meej tias cov electrodes ua haujlwm kom raug thiab raug.
Kev saib xyuas ceev faj ntawm pH meter electrode yog raws li hauv qab no:
1. Lub electrode yuav tsum tau calibrated nrog tus txheej txheem buffer tov ua ntej txhua qhov kev ntsuas, thiab cov txheej txheem buffer tov yuav tsum yog ib qho ze tshaj pH tus nqi ntawm cov tshuaj ntsuas.
2. Tsis txhob tiv tauj lub iav qhov muag teev ntawm cov electrode nrog cov khoom tawv thaum siv, kom tsis txhob ua kom puas los yog khawb lub iav qhov muag teev.
3. Cov electrode yuav tsum tsis txhob muab tso rau hauv cov dej distilled mus ntev, cov kua protein thiab acidic fluoride tov, thiab tsis txhob sib cuag nrog cov roj silicone.
4. Yog hais tias txoj kab nqes ntawm cov electrode ua qis dua thiab cov lus teb yuav qeeb vim yog siv mus ntev, nws txhais tau tias cov electrode yuav tsum tau ntxuav. Yuav kom ua tiav cov txiaj ntsig zoo tshaj plaws, nws yog qhov yuav tsum tau xaiv cov kev daws teeb meem sib txawv raws li cov kev daws teeb meem nquag ntsuas los ntawm electrode:
Feem ntau ntsuas cov kev daws teeb meem uas muaj cov protein, cov electrode membrane tuaj yeem ntxuav nrog pepsin / hydrochloric acid lotion;
Feem ntau ntsuas oily lossis organic kua, tuaj yeem ntxuav nrog acetone lossis ethanol;
Cov electrode hlws ris ua qias neeg thiab dub, thiab tuaj yeem ntxuav nrog mercaptan ntxuav kua;
Soak hauv cov tshuaj electrode regeneration rau 30 vib nas this, thiab tom qab ntawd tsau hauv 3mol / L KCl tov rau 5 teev kom ua tiav cov nyhuv ntawm activating electrode membrane.
4. Qhov kawg ntawm cov electrode yuav tsum tau ceev kom qhuav thiab huv si kom tsis txhob muaj qhov hluav taws xob luv luv.
5. Tom qab kev ntsuas, lub electrode yuav tsum tau muab ntxuav kom huv si, thiab lub tes tsho tiv thaiv electrode yuav tsum tau muab tso rau. Ib qho me me ntawm cov kua siv ntxiv yuav tsum tau muab tso rau hauv lub teeb hauv lub tes tsho kom lub qhov muag electrode moist.
