How Do I Make a Saturated Sodium Chloride Solution?
To make a saturated solution of sodium chloride, find the solubility of sodium chloride in water, mix a solution of sodium chloride and water, and watch for saturation. The solubility of sodium chloride is 357 grams per 1 liter of cold water. The solubility of sodium chloride will change based on the temperature of the water. To make the saturated solution, add 357 grams of sodium chloride to 1 liter of water, and mix thoroughly. The final solution is saturated.

Determine the solubility of sodium chloride
The solubility of sodium chloride tells the chemist the amount of sodium chloride that can be easily dissolved in water. Any amount above the solubility will produce a supersaturated solution, and all of the sodium chloride will not mix into the solution. The solubility of sodium chloride equals 357 grams per 1 liter of water.

Weigh out 357 grams of sodium chloride
Carefully weigh out as close to 357 grams as possible of sodium chloride.

Obtain 1 liter of water
Place 1 liter of water in a large beaker or volumetric flask. Ensure that the water is distilled.

Add the sodium chloride to the water
Add all of the sodium chloride to the water, and stir the mixture thoroughly. Once the salt has dissolved completely the solution is considered saturated. If there is salt that will not dissolve, then the solution has become supersaturated.