build ATC sensor, economic type
PEN pH METER
Model : PH-223
* 0 to 14.00 pH.
* ATC (auto temperature compensation).
* Auto calibration for pH 4, pH 7 or pH 10.
* Meter with pH electrode, all in one.
* IP-67, water proof.
* Easy replacement for the pH electrode.
* Pen type, easy operation carry out.
* pH 4, pH 7 standard solution are included.
* DC 1.5V battery (UM-4, AA) x 4, long life.
* Pen type easy carryout.