Hydrofast A2S Digital TDS Water Tester

The Hydrofast A2S digital TDS tester is a high-precision tool for measuring water quality. Equipped with a titanium alloy probe and upgraded 4-in-1 functionality, it accurately monitors TDS, EC, and temperature (°C/°F) with real-time alerts. Compact, easy to use, and versatile, it’s ideal for drinking water, RO/DI systems, hydroponics, pools, and hot springs.

Accurate and Reliable Measurements
Featuring a high-precision chip and durable titanium alloy probe, the Hydrofast A2S TDS tester ensures consistent, reliable, and accurate readings of water quality. Trust it to monitor drinking water and filtration systems with precision.

Upgraded 4-in-1 Functionality & Auto Shut-Off
This versatile tester combines TDS (Total Dissolved Solids), EC (Electrical Conductivity), and temperature measurement (°C/°F) in a single device. The automatic shut-off function powers the device down after five minutes of inactivity, conserving battery life and improving convenience.

Large Backlit Display with Alerts
A clear, large backlit screen ensures easy reading even in low-light conditions. Measurements above 40 ppm trigger a red alert, while readings below 40 ppm display green, allowing quick assessment of water safety.

Simple and User-Friendly Operation
Remove the protective cover, press the power button, and immerse the tester in water (maximum depth: 1.6 inches). The device automatically compensates for temperature variations. Once the reading stabilizes (10–30 seconds), press “Hold” to lock the value for easy viewing.

Wide Application
Perfect for multiple scenarios: monitor drinking water purity, check RO/DI or microfiltration systems, assess hydroponic nutrient solutions, swimming pools, hot springs, and general daily water use. Quickly determine filter replacement needs and ensure your water is safe and clean.