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LCD TDS-3 Drinking Water Quality Meter Digital Tester Temperature PPM Test Meter Pen Analyzer for Measuring Drinking Water, Hydroponics, Aquarium, Pool and Spa
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TDS Sensor Module, XH2.54-2P Sensor Module Water Quality Meter Liquid Turbidity Level Tester Monitor Board 3.3V‑5.5V : Amazon.co.uk: Business, Industry & Science
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