Taw qhia rau cov kauj ruam thiab cov hau kev rau ntsuas lub ntsuas
1. Kuaj ph 'me|Acidity Meter calibration:
Thaum ntsuas ntsuas feem ntau siv hauv xov tooj cua ntev, cov kab nqes yuav tsum tau hloov kho kom tau qhov siab tshaj plaws thiab cov roj hmab ntsaws rau sab qaum kev yuav tsum tau qhib kom ua rau lub qhov me me. Txwv tsis pub, tsis zoo siab yuav tsim tawm thaum lub sijhawm ntsuas hluav taws xob, uas yuav ua rau kev daws teeb meem tsis ua kom tsis txhob ua ion pauv cov ntaub ntawv ntsuas.
Tshem tawm cov hluav taws xob los ntawm cov beaker muaj cov dej distilled thiab siv cov ntawv lim kom nqus tau cov dej uas tseem ua rau muaj hluav taws xob. Tom qab ntawd muab cov hluav taws xob rau hauv lub beaker nrog cov kab phosphoric zoo, thiab tom qab ntawd kho qhov chaw tso rau hauv lub twj paj nruag los ua cov khoom xa tawm 6.86 ph. Qhov no yog thawj zaug los teeb tsa cov ntsiab lus rau qhov ntsuas. Tom qab teeb tsa qhov kev siv hluav taws xob, nqa tawm cov electrode los ntawm cov beaker uas muaj cov hluav taws xob phosphoric acid daws, thiab muab tso rau hauv beaker muaj dej distilled. Tos li ntev li 3 feeb kom yaj cov nqe seem ntawm cov mixed phosphoric acid tov.
2. Tom qab, tshem tawm cov hluav taws xob los ntawm cov beaker muaj cov dej distilled thiab siv cov ntawv lim kom nqus tau cov dej uas tseem ua rau muaj hluav taws xob. Tom qab ntawd tso cov electrode nyob rau hauv ib qho kev daws teeb meem muaj poov tshuaj hydrogen phthalate lossis borax, thiab saib seb cov ntsuas puas qhia tias yog cov ntawv piv txwv ntawm 4.00 lossis 9.18. Yog tias tsis yog, kho cov kab nqes nqes ntawm lub twj paj nruag los tso tawm hauv lub pH ntawm 4.00 lossis 9.18, uas feem ntau siv ob {{}} point calibration. Yog tias peb {{{-}} point calibration yog qhov yuav tsum tau, tsuas yog rov ua tib cov theem rau lwm cov kev daws teeb meem. Nov yog txoj kev ntsuas hluav taws xob rau acidity meters.
3. Tom qab calibration, ntxig roj hmab nres tsheb rov qab. Yog tias tsis siv hauv ib ntus, nco ntsoov sau cov npog tiv thaiv ntawm electrode nrog cov tshuaj noo los ua kom cov electrode. Qhov no tuaj yeem txuas ntxiv lub neej ntawm electrode thiab txo nws lub peev xwm asymmetric. Cov hluav taws xob muaj lub neej thiab tsis yooj yim, yog li lub chaw soj nab yuav tsum tau hloov lawv ntau zaus. Tsis txhob xav tias tsuas yog vim tias cov electrodes tsis puas thaum siv lub sijhawm siv, lawv yuav tsis raug hloov.
