⑴ Calibrate and calibrate the pH meter before pH measurement.
(2) pH-meetri täpsuse kontrollimiseks, näiteks pärast pH-meetri kalibreerimist pH-ga 6.86 ja pH 4.00, sisestage pH-elektrood pH-ga 9,18 lahusesse ja kontrollige, kas instrumendi kuvatav väärtus on kooskõlas standardlahuse pH väärtusega.
⑶Check whether the pH meter needs to be reset during the general accuracy measurement. The pH meter may drift or change after being calibrated and used. Therefore, before the test, insert the electrode into a standard buffer solution that is close to the measured solution, and determine whether it needs to be re-calibrated according to the size of the error.
Pls klõpsake allpool fotot ja lugege selle PH-meetri PH818 kohta lisateavet?
PH818 Product link:
