Convert Sodium ppm to Sodium Meq/L


What is Sodium ppm and Sodium meq/L?

  • Sodium ppm means the amount of sodium in water or soil, measured in parts per million. It tells how many milligrams of sodium are present in one liter of water.

  • Sodium meq/L means milliequivalents per liter. It is another way to express the amount of sodium, but it also considers the chemical properties of sodium, especially its charge, which affects how it interacts with soil and plants.

Why convert Sodium ppm to Sodium meq/L?

Different measurements are used for different purposes:

  • ppm is easy to understand as the weight of sodium.
  • meq/L helps understand how sodium affects soil chemistry and plant growth because it considers sodium’s charge.

How to convert Sodium ppm to Sodium meq/L?

The formula is:

Sodium (meq/L)=Sodium (ppm)/Atomic weight of Sodium/Valence of Sodium

For sodium:

  • Atomic weight = 23 mg/mmol
  • Valence (charge) = 1

So,

Sodium (meq/L)=Sodium (ppm)/23

Example:

If your water has 46 ppm of sodium:

Sodium (meq/L)=46/23=2 meq/L

Summary for Farmer:

  • To get Sodium meq/L, divide the ppm value by 23.
  • This helps you understand how much sodium your soil or water has in a way that affects plants.

You can find more agriculture conversion calculators here.