what determines salt concentration
The objective of this study was. to develop a model system that could be used to mea-. sure a w directly, without manufacturing cheese, to allow. cheese makers to determine the salt and salt replacer. concentrations needed to achieve the equivalent a. w to. that of their existing full-sodium control formula.
The salt content of the water can be measured very precisely using the conductivity method. Salinity can also be measured with a hand held refractometer. A refractometer measures the change of direction or bending of the light as it passes from air to water. Light moves slower in water than air. The more salt in the water, the slower the light moves. You can see the effect of light bending (refracting) as it passes from the water into the air by placing a pencil in a glass of water. The pencil appears to bend where it enters the water.