Fdit 5 in 1Portable Salinity/Temperature/TDS/EC Digital Seawater Quality Tester for Pools, Aquariums & Saltwater TRUEDIRECTION put the sensor in the

put the sensor in the solution to be tested

and compare with the chart for accurate results

It's nontoxic and won't interfere with the nitrogen cycle process

Use the color-coded chart to determine if your water is safe or if adjustments are needed

Easy To Use: It consists of a pre-made 4dKH solution containing the appropriate amount of indicator

Fdit 5 in 1Portable Salinity/Temperature/TDS/EC Digital Seawater Quality Tester for Pools, Aquariums & Saltwater TRUEDIRECTION put the sensor in theBrand: Fdit Features: WIDE APPLICATIONSuitable for drinking water, swimming pool, aquarium, reverse osmosis system, spa or hydroponic. EASY OPERATIONWide application range, fast measurement and simple operation, reliable to use. SENSITIVE ELECTRODE SENSORThe water quality tester has a sensitive electrode sensor to read accurate values. ACCURATE MEASUREMENTHigh sensitivity probe for more accurate measurement, more practical to use. PREMIUM