PEN PH METER
MODEL: PH-220
* Separate PH Electrode, easy for general purpose and remote measurements
* 0 to 14.00 pH
*Auto calibration for pH4, pH7 or pH10
* Temp. adjustement is not necessary
* IP-65 water proof
* Pen type, easy carry out
* Complete set with separate pH electrode (PE-11) and PH4, PH7 standard solutions
* Built-in reverse display button
* DC 1.5V battery (UM-4, AA) x4, long life