500 Gallon Capacity - Approximately 3 months of protection per cartridge

and trace minerals for naturally alkaline

The IP67-rated waterproof casing protects against water intrusion and the tester floats—so you'll never lose it in a pool

ENGINEERED FOR VALUE

This automated controller continuously monitors EC/TDS levels and doses nutrients automatically to maintain optimal growing conditions

Milwaukee MA814DB/1 4-Ring EC/TDS/Temp Replacement Probe for MW170 & MW180 pH 9.5 water bottle 500 Gallon Capacity - ApproximatelyMilwaukee MA814DB 1 4 Ring EC TDS Temperature Replacement Probe Restore full measurement accuracy to your Milwaukee bench meter with the MA814DB 1 the factory matched replacement probe for the MW170 and MW180 EC TDS Temperature bench meters. Built with a 4 ring conductivity cell for superior accuracy across a wide measurement range, this probe is engineered for demanding lab, hydroponic, and water quality environments. Why Replace Your Probe?