PH meter, digital ph meter, pen type ph meter,mini ph meter,Pocket-sized pH Meter,Digital pH controller, Digital ORP controller PH meter, digital ph meter, pen ... type ph meter,mini ph meter,Pocket-sized pH Meter,Digital pH controller, Digital ORP ... : pH 0.00-14.00, Temperature 0ºC-50ºC (32°F-122°F)Resolution: pH 0.01PH, Temperature 0.1 ...