Lutron PH-321M – PH Monitor

Lutron PH-321M is a pH monitor that measures from 0 to 14 pH with a precision of 0.01 pH. It’s accurate to within 0.1 pH between pH 4 and pH 10. It automatically calibrates to pH 4, pH 7, or pH 10. It has an LCD display with backlight for easy reading. It’s powered by a DC 9V adapter and is commonly used for monitoring pH in aquariums or for general purposes. Optional pH electrodes include PE-03, PE-11, and PE-21.