Measuring Conductivity Of Water

Conductivity measurements are used routinely in many industrial and environmental applications as a fast inexpensive and reliable way of measuring the ionic content in a solution.

Measuring conductivity of water.

Conductivity or specific conductance of an electrolyte solution is a measure of its ability to conduct electricity the si unit of conductivity is siemens per meter s m. For example the measurement of product. Conductivity is a measure of how well a material conducts electricity. If a conductivity sensor measures from µs up to ms milli siemens 10 3 up to s it is obvious that the sensor performance cannot be the same over the whole range that is why conductivity sensors have their accuracy linked to.

This ability is directly related to the concentration of ions in the water 1. Thus measuring the conductivity of water from different sources can indicate the concentration of electrolytes therein. As this is the definition. Resistivity conductivity measurement of purified water.

Most laboratory water purification systems contain a resistivity or conductivity meter and cell to monitor the purity level of the water. The standard unit of measure for conductivity is microsiemens per centimeter. In water electricity is conducted by the available ions or electrolytes dissolved in the water. The conductivity of water is a measure of the capability of water to pass electrical flow.

Conductivity in water is affected by the presence of inorganic dissolved solids such as chloride nitrate sulfate and phosphate anions ions that carry a negative charge or sodium magnesium calcium iron and aluminum cations ions that carry a positive charge. Resistivity is the reciprocal of conductivity and either may be used to inexpensively monitor the ionic purity of water. These conductive ions are originated due to inorganic materials such as chlorides alkalis carbonate and sulfides compounds and dissolved salts. Conductivity is a measure of water s capability to pass electrical flow.

For aquarium enthusiasts for example most fish in the united states thrive in water with a conductivity between 150 and 500 microsiemens per centimeter while rivers have a range of conductivity between 50 to 1500 microsiemens per centimeter. These conductive ions come from dissolved salts and inorganic materials such as alkalis chlorides sulfides and carbonate compounds 3. One calorie is per definition the amount of energy needed to increase the temperature of one gram of water with one degree celsius at 20 c. Linking specific heat and thermal conductivity.

Conductivity is a measure of the ability of water to pass an electrical current. For this reason. The one exception to the above is related to the heat capacity of water.