How to use the calibration solution:

Wash the pH meter electrode with pure water (2-3 times), then immerse the electrode in the calibration solution and set the pH value of the pH meter to the same value as the calibration solution.

If you want the instrument to be more accurate, you can use two or three points to calibrate.

The so-called two-point calibration is calibrated with two calibration sliders, and the three-point calibration is calibrated with three calibrators.

Generally, the calibration starts from 6.86. Then calibrate with 4.00 or 9.18.

Note: Please allow 1-3cm error due to manual measurement. Please make sure you do not mind before you bid.

Due to the difference between different monitors, the picture may not reflect the actual color of the item.

Includes:

5 x PH4.00

5 x PH6.86

5 x PH9.18