Answer: a Brinometer! Brine is simply defined as a solution of salt in water. It has a wide variety of uses from the transport of thermal energy, de-icing the roads or in cooking to preserve meat or vegetables. The low levels of salinity commonly found in food or seawater can be tested in a number of ways such as on the Laqua Twin sodium meter , Laqua Twin salt meter or for a multi-pa...