text: The conductivity of a solution is highly temperature dependent, so it is important either to use a temperature compensated instrument, or to calibrate the instrument at the same temperature as the solution being measured. Unlike metals, the conductivity of common electrolytes typically increases with increasing temperature.
  Over a limited temperature range, the way temperature affects the conductivity of a solution can be modeled linearly using the following formula:
  where 
  :T is the temperature of the sample,
  :T is the calibration temperature,
  :σ is the electrical conductivity at the temperature T,
  :σ,
  :α is the temperature compensation gradient of the solution.
  The temperature compensation gradient for most naturally occurring samples of water is about 2%/°C; however it can range between 1 and 3%/°C. The compensation gradients for some common water solutions are listed in the table below.