Fast, accurate and affordable salt water digital chemistry reader. With the SATLDIP 2-in-1 Electronic Water Tester you will never need to buy reagents or test strips again. Now anyone can test their pool, spa, pond or aquarium water in seconds and have confidence in the results – no color matching required. Simply collect water sample with onboard cup, place sensor in water sample and press "start". The digital display will show your results in seconds. Salt dip measures salt content and water temperature.