HM Digital COM-360 Professional pH/EC/TDS/Temp Meter – 4-in-1 Water Quality Tester Alexapure Pro filters 2 × AA alkaline batteries

2 × AA alkaline batteries

Most marine systems target 1

or oxidizing agents — leading to sluggish response

Milwaukee Instruments: precision water quality measurement tools engineered for professionals who demand accuracy

Replace batteries when the low-battery indicator appears

HM Digital COM-360 Professional pH/EC/TDS/Temp Meter – 4-in-1 Water Quality Tester Alexapure Pro filters 2 × AA alkaline batteriesHM Digital COM 360 Professional 4 in 1 pH EC TDS Temp Meter The HM Digital COM 360 is a professional grade, multi parameter water quality meter that measures pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and Temperature all in one rugged, water resistant handheld device. Trusted by hydroponics growers, aquaculture professionals, lab technicians, pool operators, and water treatment specialists worldwide. Key Benefits 4 in 1