How Do You Measure The Salinity Of Sea Water?
Salt water that contains sea life must contain an appropriate amount of saline—about 32 to 37 parts per thousand—in order to sustain its ecosystem. The salt level can change based on how much water evaporates. For example, if too much water in an enclosed container is allowed to evaporate, the saline level goes up dramatically. You can easily measure the salinity of sea/ocean water using an instrument called a refractometer, which measures the index of refraction of a particular substance. It is a device used in geology, medicine and agriculture. Set up your refractometer device by dropping three drops of distilled water on its meter. Turn the dial until it lands on the zero. Follow the specific manufacturer’s device to calibrate the refractometer. Dry it off with a soft tissue when you are finished. Place the eyedropper in the sea water to retrieve a sample. Open the refractometer’s lid and drop three drops into the meter. Shut the lid when you are done. Peek through the eyepiece
