Enter the retention time for analyte and the retention time for reference into the RRT Calculator. The calculator will evaluate the RRT.

- Solids Retention Time (SRT) Calculator
- Retention Ratio Calculator
- FTE (Full-Time-Equivalent) Calculator

## RRT Formula

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

**RRT = Ta / Tr**

Variables:

- RRT is the RRT ( )
- Ts is the retention time for analyte
- Tr is the retention time for reference

## How to Calculate RRT?

The following steps outline how to calculate the RRT.

- First, determine the retention time for analyte.
- Next, determine the retention time for reference.
- Next, gather the formula from above = RRT = Ta / Tr.
- Finally, calculate the RRT.
- 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.

retention time for analyte = 40

retention time for reference = 30

RRT = Ta / Tr** **= ?