Product Parameters
Model: EZ-9909. This is a digital 5-in-1 water quality tester with backlight and an IP67 waterproof design. The device is made of plastic and comes in the color shown in the picture, with a compact handheld form with a display and button controls. The package content includes 1 water quality tester and 1 English manual. Please note that slight color differences may occur due to lighting and screen settings, and the allowed measurement deviation is +/- 1-3 cm.

Core Functions
This multifunctional tester is designed to measure salinity, pH, TDS, and conductivity in water. Measurement ranges for conductivity are 0 to 10000 uS/cm, 10.01 to 19.99 ms, and 20.1 to 400 ms/cm, with an accuracy of 2 percent of the reading. Measurement ranges for TDS are 0 to 1000 ppm, 1000 ppm to 10000 ppm, and 10.1 to 200.0 PPT. The measurement range for salinity is 0.00 to 25.00 percent with 0.01 percent resolution. The measurement range for pH is 0.01 to 14.00 pH with 0.01 pH resolution and 0.05 pH accuracy. The backlit digital display helps provide clear readability during use.

Suitable Scenarios
This tester is suitable for checking water quality in saltwater-related environments and other situations where salinity, pH, TDS, and conductivity need to be monitored. Its handheld design and waterproof structure make it practical for routine testing and on-site measurement in daily water quality checks.

Product Summary
This digital 5-in-1 water quality tester combines multiple measurement functions in one handheld device. With a backlit display, waterproof construction, and a wide test range for several key water parameters, it offers a practical solution for convenient water quality control.