Conductivity Meter is used widely to determine the level of impurities in water supplies for domestic consumption as well as industrial use. Industries that employ this method include the chemical, semi-conductor, power generation, hospitals, textile, iron and steel, food and beverage, mining, electroplating, pulp and paper, petroleum and marine industries.
    Specific applications include chemical streams, demineralizer output, reverse osmosis, stream boilers, condensate return, waste streams, and boiler blow down, cooling towers, desalinization, laboratory analysis, fruit peeling and salinity level detection in oceanography.

It is used to measure the capacity of ions in an aqueous solution to carry electrical current. As the ranges in aqueous solutions are usually small, the basic units of measurements are milli-siemens/cm （mS/cm） and micro Siemens/cm （µS/cm）.

BGD 291 Electrical Conductivity （EC） Meters have double digits LCD display with big screen and blue back light, display conductivity value and temperature value； With manual or automatic temperature compensation. There are four types of electrodes for conduction cell constant： 0.01,0.1,1.0 and 10.0cm^-1 ,user can select by your need. At the same time, it .have automatic switching measuring frequency, measuring ultrapure water with using K=0.01cm^-1 titanium alloy electrode and sealing measuring cell