... type ph meter, PH controller, PH monitor, TDS meter, EC meter, CF meter, ORP controller PH meter, digital ph meter, pen type ph meter, PH controller, PH monitor ... °CDimensions: 180mm Dia.35mmPH/ORP INDUSTRIAL ON-LINE CONTROLLER PHC200 pH meter 0-14pH ± 0.01pH PHC201 pH controller 0-14pH 0-14pH ...