# Percent Recovery Calculator

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### Percent Recovery Formula

The formula to calculate percent recovery is:

\[
\text{PR} = \left( \frac{\text{SAP}}{\text{SBP}} \right) \times 100
\]

Where:

**PR**= Percent Recovery**SAP**= Substance Amount After Purification**SBP**= Substance Amount Before Purification

### Example Calculation

If the substance amount before purification is 150 grams and the substance amount after purification is 120 grams, the percent recovery would be:

\[
\text{PR} = \left( \frac{120}{150} \right) \times 100 = 80\%
\]

### Importance

Percent recovery is vital in chemistry and lab work, helping to determine the efficiency of purification processes by comparing the substance amounts before and after purification.

### FAQ

**What is percent recovery?**

Percent recovery is a measure of how much of a substance remains after a purification process, expressed as a percentage of the original amount.