Review on 💧 KEYESTUDIO Turbidity Sensor Module V1 for Arduino - Water Quality Tester, Liquid Particle & Turbidity Level Monitoring by Keith Desjarlais

This sensor detects additive differences in liquids. I tested this sensor with tap water and coffee and found that the sensor actually returns different values. I've also found that a mixture of coffee and water gives readings between pure water and coffee, so this sensor is definitely changing based on the purity of the water. I found that the purer the water, the higher the reading, and the less pure it was, the lower the reading. I've also found that I get different readings when I slightly change the amount of coffee I add to the coffee/water combination. So I think this sensor can detect quite small changes in the difference in water purity. I realize that this transducer cannot be fully submerged in water and this is a factor to consider when using this transducer in your project.