User's Manual

Model No. PS-2108 Dissolved Oxygen Sensor

Collecting Data

8. Begin collecting data. Allow the system to take in ambient light for 60 seconds, and then

cover the entire set up with an opaque cloth, such as a rubberized lab apron. After fifteen

minutes, remove the cover and turn on the light. Continue to collect data for another

fifteen minutes. Stop data collection.

9. If desired, conduct additional data runs in a similar manner.

Sample Data

Analysis

1. Discuss the reasons for use of a control in this experiment.

2. Why was it not necessary to calibrate the sensors to an absolute standard?