Normal Saline: How to Prepare at Home

​Normal saline is a mixture of salt and water. It is called normal because its salt concentration is similar to tears, blood and other body fluids (0.9% saline). It is also called isotonic solution. Normal saline is soothing and will not burn or sting when applied. It is used for:

  • rinsing contact lenses
  • rinsing the nasal passages (nasal irrigation)
  • cleansing the bladder (bladder irrigation)

How to make normal saline solution at home

Saline solution is easy to make at home. You will need:

  • one clean glass bottle or jar with lid
  • table salt
  • pot with lid
  1. Put one cup of water and ½ teaspoon of salt into the pot. Put the lid on.
  2. Boil for 15 minutes with the lid on (set a timer).
  3. Set the pan aside until cooled to a room temperature.
  4. Carefully pour the salt and water (normal saline) from the pan into the jar or bottle and put the lid on.

Normal saline solution: A few important points

  • It is very important to use only fresh normal saline. Bacteria can grow in saline and cause infections
  • Use a clean glass jar or bottle is that has been recently washed in a dishwasher with very hot soapy water
  • Do not drink solution
  • Throw away the solution if it grows cloudy or looks dirty
  • Keep the saline in a bottle or a glass for a maximum of 24 hours. Throw away any unused solution, wash the container, and make a new solution.

​Dalia Bozic, RN, MN, NP-PHC