Osmotic Gap Calculator

Formula

The formula to calculate the Osmotic Gap is:

\[ OG = \left( \frac{TDS_i - TDS_f}{TDS_i} \right) \times 100 \]

Where:

\(OG\) is the osmotic gap in percentage
\(TDS_i\) is the initial total dissolved solids
\(TDS_f\) is the final total dissolved solids

What is Osmotic Gap?

The Osmotic Gap is a measure used to evaluate the difference between the initial and final total dissolved solids in a solution. It is expressed as a percentage and helps in understanding the changes in solute concentration.

Example Calculation 1

Let's assume the following values:

Initial Total Dissolved Solids (TDS_i) = 300 mg/L
Final Total Dissolved Solids (TDS_f) = 250 mg/L

Using the formula:

\[ OG = \left( \frac{300 - 250}{300} \right) \times 100 = 16.67\% \]

The Osmotic Gap is 16.67%.

Example Calculation 2

Let's assume the following values:

Initial Total Dissolved Solids (TDS_i) = 500 mg/L
Final Total Dissolved Solids (TDS_f) = 450 mg/L

Using the formula:

\[ OG = \left( \frac{500 - 450}{500} \right) \times 100 = 10\% \]

The Osmotic Gap is 10%.