Kev Taw Qhia Hauv thaj tsam ntawm kev sim kev tshawb fawb, qhov tseeb thiab qhov tseeb yog qhov tsis sib tham. Ntawm cov cuab yeej tseem ceeb uas ua kom cov qauv no yog pH meter, ib qho khoom siv tseem ceeb rau kev ntsuas cov kua qaub lossis alkalinity ntawm kev daws. Cov lus qhia dav dav no delves mus rau hauv qhov tsis sib xws ntawm pH ntsuas, piav qhia lawv txoj haujlwm, qhov tseem ceeb, thiab kev nce qib thev naus laus zis tshiab. Dab tsi