Fixed Pathlength Cell Analysis

1. Similarly, you will run your samples again using a fixed pathlength cell to determine which method is better at analyzing your samples

2. Using a plastic syringe, you will inject your sample into the cell (it may overflow slightly)

3. Following the sample procedure above, you will run each of your samples, flushing the fixed cell with methylene chloride in between runs.

   Tip

   Starting with the least concentrated sample and working up to the most concentrated sample will greatly increase the accuracy of the data for fixed salt plates.

4. Once all of your scans has finished you can analyze your data similar to the steps provided above when using the salt plates.