They can also include pollutants such as heavy metals, and other substances such as organic materials that may have leaked into your water supply system. The materials that constitute dissolved solids in water include materials such as minerals, salts, anionic and cationic substances. As an example, reverse osmosis purified water will have a TDS between 0 and 10, whereas tap water will vary between 20 and 300, depending on where you live in the world. TDS is directly related to the quality of water i.e., the lower a TDS figure, the purer the water. TDS is generally expressed in parts per million (ppm) or as milligrams per liter (mg/L). TDS is an abbreviation for Total Dissolved Solids in a liquid, including organic and inorganic substances in a molecular, ionic, or micro-granular suspended form. All the components can be easily purchased from Amazon. Bill of Materialsįollowing are the components required for making this project. In order to know more about water quality, you can add Ph Sensor, Turbidity Sensor & DO Sensor to this circuit as well. The code, circuit diagram, and all other procedure is given below. The measured temperature is used with TDS Sensor to compensate for the reading with high calibration and high accuracy. So will also add DS18B20 Waterproof Temperature Sensor to measure Water Temperature. Since TDS Value depends upon the temperature. So, in this project, we will interface Gravity Analog TDS Sensor with Arduino Microcontroller and read the value in 16×2 LCD Display. This can be applied to domestic water, hydroponic and other fields of water quality testing and monitoring. Therefore, the TDS value can be used as one reference point for reflecting the cleanliness of the water.

In general, the higher the TDS value, the more soluble solids are dissolved in water, and the less clean the water is.

TDS (Total Dissolved Solids) indicates how many milligrams of soluble solids are dissolved in one liter of water.

Source Code/Program with Temperature Compensation.

Temperature Compensated TDS Sensor with Arduino.

Interfacing Gravity Analog TDS Sensor with Arduino & LCD Display.

Interfacing Gravity Analog TDS Sensor with Arduino.

What is a TDS meter and how does it work?.

Dht11 flow sensor library for proteus 8