Enter the number of samples produced by a full STR and the total number of samples processed into the Extraction Efficiency Calculator. The calculator will evaluate the Extraction Efficiency.

## Extraction Efficiency Formula

The following two example problems outline the steps and information needed to calculate the Extraction Efficiency.

EE = #STR / #SP *100

Variables:

• EE is the Extraction Efficiency (%)
• #STR is the number of samples produced by a full STR
• #SP is the total number of samples processed

## How to Calculate Extraction Efficiency?

The following steps outline how to calculate the Extraction Efficiency.

1. First, determine the number of samples produced by a full STR.
2. Next, determine the total number of samples processed.
3. Next, gather the formula from above = EE = #STR / #SP *100.
4. Finally, calculate the Extraction Efficiency.
5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem :

Use the following variables as an example problem to test your knowledge.

number of samples produced by a full STR = 500

total number of samples processed = 600

EE = #STR / #SP *100 = ?