# Percent of Rejection Calculator

Salt rejection is one of the parameters used to observe the state of reverse osmosis when the dissolved metals pass through a membrane. It is a process that describes the total quantity of salt getting rejected from the reverse osmosis feedwater stream as the percentage. Use our online Percent of rejection calculator to do RO rejection rate calculation. Reverse osmosis salt percent rejection calculator works based on the total dissolved solids feeds and solids product.

## RO Rejection Rate Calculation

Salt rejection is one of the parameters used to observe the state of reverse osmosis when the dissolved metals pass through a membrane. It is a process that describes the total quantity of salt getting rejected from the reverse osmosis feedwater stream as the percentage. Use our online Percent of rejection calculator to do RO rejection rate calculation. Reverse osmosis salt percent rejection calculator works based on the total dissolved solids feeds and solids product.

Code to add this calci to your website

#### Formula:

r = ((f - p) / f) × 100
**Where,**
r = Salt Rejection
f = Total Dissolved Solids Feeds
p = Total Dissolved Solids Product
### Example:

Calculate the percent of rejection of salt based on the total dissolved solids feeds of 200 and total dissolved solids product of 50.

#### Solution:

r = ((200 - 50) / 200) × 100

= 75 %