Thaum tus cwj mem xeem tawm ntawm lub Hoobkas, nws tau raug ntsuas thiab tuaj yeem siv ncaj qha. Cov xwm txheej hauv qab no yuav tsum rov ntsuas dua:
1. Nws tau siv (los yog muab tso rau) ntev ntev tom qab calibration;
2. Electrodes siv ntau zaus;
3. Cov kev ntsuas qhov tseeb yog qhov siab;
4. Thaum ua calibration, tsis txhob rov qab siv lub calibration tsis;
5. Thaum muaj cov pob zeb dawb nyob rau ntawm qhov kawg ntawm tus cwj mem, qhov no yog qhov tshwm sim ib txwm muaj, thov tsis txhob ntshai, koj tuaj yeem tsau nws hauv dej rau ib lub sijhawm;
6. Muab ob peb tee ntawm cov tshuaj khaws cia lossis calibration tsis nyob rau hauv lub tes tsho cwj mem. Tsis txhob siv cov dej distilled los yog dej ntshiab los so los yog khaws cov ntawv xeem;
7. Tej zaum yuav muaj cov npuas me me nyob rau hauv lub qhov muag rhiab ntawm lub iav electrode ntawm tus cwj mem xeem, uas yuav cuam tshuam rau kev ntsuas ib txwm muaj ntawm electrode. Lub electrode yuav tsum tau shaken thaum siv los ua kom cov npuas khiav tawm ntawm qhov muag muag;
8. Lub iav electrode yog yooj yim tawg, yog li ceev faj thaum siv;
9. Yog hais tias tus nqi tso tawm yog fuzzy los yog tsis tso tawm los yog tus nqi tso tawm ntau dua lossis qis dua tus nqi pH tiag tiag ntawm cov tshuaj, cov roj teeb yuav tsum tau hloov.
