FIRST BRAND We were established with a simple yet essential mission: to provide everyone with a reliable way to test water quality. Clean drinking water is a basic human right, and our TDS meter digital water test device helps people verify it professionally. We are committed to high quality products and excellent customer service. Join us in making clean water accessible to everyone. Accurate and reliable results Tired of unreal readings from other testers? Our 2024 4-in-1 water quality tester uses a high-precision chip and a premium titanium alloy probe to deliver accurate and reliable results every time. Equipped with the latest technology and advanced features, it is a reliable choice for sensitive water tests. Why wait? Enjoy dependable test performance for you and your family today. Multifunctional 4-in-1 and temperature This is a 4-in-1 meter for TDS (Total Dissolved Solids), EC (electrical conductivity), and temperature in Celsius and Fahrenheit. It is powered by a single battery. These features make it a versatile and user-friendly TDS meter for a variety of applications. Two user-friendly features 1) 25% larger LCD: The 2024 4-in-1 water quality tester has a larger screen for easy reading by everyone, including the elderly and children. 2) Colorful TDS graph: A colorful TDS graph is placed on the back of the device and in the user manual, so you can quickly understand PPM values without online lookups or extra searching. Multipurpose TDS test device Tests the purity of drinking water for safe and healthy consumption. It can be used with DI water, hydroponics (test nutrients), pools, hot tubs, spas, faucet water, bottled water, and other drinking water sources. Our easy-to-use device tests the purity of any water source quickly and accurately, helping you make informed decisions whether at home, on a hike, or during camping. Use scenarios - Home use: verify drinking water quality to ensure safety for all household members. - Outdoor or travel: check water quality from unfamiliar sources during camping or hiking. - Hydroponics or pools: monitor water quality for plant nutrients, pools, hot tubs, and spa applications. - General testing: quickly assess the safety of various drinking water sources without searching online. Live customer support A team of water quality experts is available for fast and efficient responses via live chat and email. Our goal is to provide products that deliver real value, and we take customer feedback seriously.