Yuav ua li cas txheeb xyuas acidity meter tsis ua hauj lwm?
1. Tshawb xyuas cov cuab yeej ua haujlwm
(1) Txheeb xyuas seb lub pH meter zaub qhia tau li cas. Yog tias nws tsis pom qhov degree, xyuas seb cov khoom siv hluav taws xob puas zoo li qub. Kev tshuaj xyuas ntawm Sartorius PB-10 yog raws li hauv qab no: Yog tias lub teeb liab tawm tswv yim tshaj qhov ntsuas qhov ntsuas, qhov ntsuas yuav pom ————. Lub sijhawm no xyuas tias cov electrode yog immersed hauv cov tshuaj. Yog tias nws tau txiav txim siab tias muaj teeb meem nrog cov lus teb electrode, qhov ntsuas pom yuam kev. Qhov kev ua yuam kev no tseem yuav tshwm sim thaum lub cev muaj zog ua haujlwm tsawg dua 90% lossis ntau dua 105% thaum lub sijhawm ntsuas ntsuas, yog li kev ua yuam kev qhia tias muaj teeb meem nrog cov electrode lossis tsis.
2) Hloov lub ntsuas mus rau mv hom, siv lub luv luv ntsaws rau hauv PH input chaw nres nkoj los xyuas qhov muaj peev xwm. Mettler pH meter nyeem 0± 2mv, thiab Sartorius pH meter nyeem 0±0.3mv.
(3) Siv PH simulator thiab tshawb xyuas qhov muaj peev xwm thaum PH yog 4.01/7.00/9.21, thiab kwv yees li tau txais peb qhov tseem ceeb ntawm +180mv, 0mv thiab -130mv.
2. Tshawb xyuas cov haujlwm electrode thiab siv
(1) Ntawm chav tsev kub, ntsuas lub peev xwm ntawm buffers 4.01 thiab 7.00. yuav tsum tau 180mv ± 30mv thiab 0mv ± 30mv feem
(2) Yog tias muaj ATC, ntsuas qhov kub ntawm cov dej khov thiab cov ntawv nyeem yog 0± 1 degree . Yog tias lub teeb liab tsis hloov, muaj ib yam dab tsi tsis ncaj ncees lawm nrog qhov ntsuas kub.
(3) Hloov lub cable thiab rov ua cov kauj ruam saum toj no. Yog tias 1 & 2 ua tiav, muaj teeb meem nrog lub cable. Yog tias 1 tsis ua tiav, muaj teeb meem nrog cov electrode lossis cable.
3. Tshawb xyuas electrode kev ua haujlwm
(1) Calibrate lub electrode raws li kev ntsuas kev ua haujlwm phau ntawv. Lub xoom taw tes thiab nqes hav qhov tseem ceeb tau txais yuav tsum ua tau raws li cov kev qhia tshwj xeeb ntawm cov electrode. Zero point: 0mv ± 30mv, txoj kab nqes: 95% -100% ntawm 25 degree
(2) Tshawb xyuas lub sijhawm teb ntawm cov electrode, muab cov electrode tso rau hauv lwm qhov pH tsis thiab do, xyuas lub peev xwm ntawm cov electrode tom qab 30 vib nas this, qhov kev hloov pauv yuav tsum tsis pub tshaj 2mv hauv 30 vib nas this tom ntej.
