[Waterproof Pen Type SK-662PH]
[Waterproof Pen Type SK-661PH]
[Pocket Type SK-630PH]
[Pocket Type SK-631PH]
[Replacement Sensor]
[Waterproof pen type SK-660PH]
[Pocket Type SK-632PH]
Suitable for water quality control such as rivers, factory drainage, food processing, etc.
Sensors are replaceable
pH standard liquid sold separately.