Wondering what's really in your water? This Hanna TDS tester gives you the answers in seconds! The DiST 1 measures total dissolved solids from 0-2000 ppm with ±2% accuracy, perfect for checking your drinking water, aquarium, hydroponics, or pool. It's completely waterproof and fits comfortably in your hand with its slim 0.7-inch profile. The large LCD display shows both TDS readings and temperature simultaneously, and it automatically compensates for temperature variations. Calibration is super simple - just one button for automatic calibration at 1382 ppm. The graphite sensor prevents oxidation and gives you reliable readings every time. Battery life is excellent with helpful indicators showing remaining power. Whether you're a home gardener testing nutrient solutions, an aquarium enthusiast monitoring water conditions, or just someone who wants to know their water quality, this tester is professional-grade but easy enough for anyone to use. It automatically shuts off after 8 minutes to save battery, and the conversion factor of 0.5 makes it ideal for various applications. Much more reliable than those cheap testers that give inconsistent results. Know exactly what you're drinking or using with this rugged, dependable water tester.