6 In 1 Water Quality Tester High Accuracy Portable TDS EC COD Meter Water Qualit
--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n--\n\nFeature: \n 1. PORTABLE AND EFFICIENT: Our water quality testing pen is a portable instrument that allows for quick measurement and evaluation of various indicators and parameters of water bodies.\n2. COMPREHENSIVE COMPOSITION: Typically consisting of a pen shaped device and a measurement electrode, the measurement electrode can be immersed in the water sample being tested. It generates corresponding electrical signals through chemical responses or physical changes with substances in the water sample. The instrument converts these electrical signals into readable numerical values, displaying the measurement results of water quality indicators on a screen or indicator lights.\n3. EASY TO USE: Our water quality testing pen is extremely convenient. With its compact size, it is easy to carry and suitable for outdoor and field use, as well as laboratory and industrial environments. Users simply need to insert the el-
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