Dissolved Oxygen Sensor

Dissolved Oxygen Sensor - Preparing the Dissolved Oxygen...

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Dissolved Oxygen Probe (Order Code DO-BTA or DO-DIN) The Dissolved Oxygen Probe can be used to measure the concentration of dissolved oxygen in water samples tested in the field or in the laboratory. You can use this sensor to perform a wide variety of tests or experiments to determine changes in dissolved oxygen levels, one of the primary indicators of the quality of an aquatic environment: Monitor dissolved oxygen in an aquarium containing different combinations of plant and animal species. Measure changes in dissolved oxygen concentration resulting from photosynthesis and respiration in aquatic plants. Use this sensor for an accurate on-site test of dissolved oxygen concentration in a stream or lake survey, in order to evaluate the capability of the water to support different types of plant and animal life. Measure Biological Oxygen Demand (B.O.D.) in water samples containing organic matter that consumes oxygen as it decays. Determine the relationship between dissolved oxygen concentration and temperature of a water sample. Inventory of Items Included with the Dissolved Oxygen Probe Check to be sure that each of these items is included in your Dissolved Oxygen Probe box: Dissolved Oxygen Probe (dissolved oxygen electrode with membrane cap) One replacement membrane cap Sodium Sulfite Calibration Standard (2.0 M Na 2 SO 3 ) and MSDS sheet D.O. Electrode Filling Solution, MSDS sheet, and filling pipet Calibration bottle (empty, lid with hole) D.O. Polishing Strips (1 pkg) Dissolved Oxygen Probe booklet Do I Need to Calibrate the Dissolved Oxygen Probe? It is not always necessary to perform a new calibration when using the Dissolved Oxygen Probe in the classroom. If your experiment or application is looking only at a change in dissolved oxygen, then the software’s stored calibration is all you need. If you are making discrete measurements, such as taking readings in a stream or lake, and you want to improve the accuracy of your measurements, then it is best to perform a new calibration. 2 Preparing the Dissolved Oxygen Probe for Use Step 1 Probe Preparation 1. Prepare the Dissolved Oxygen Probe for use. a. Remove the blue protective cap from the tip of the probe. This protective cap can be discarded once the probe is unpacked. b. Unscrew the membrane cap from the tip of the probe. c. Using a pipet, fill the membrane cap with 1 mL of DO Electrode Filling Solution. d. Carefully thread the membrane cap back onto the electrode. e. Place the probe into a beaker filled with about 100 mL of distilled water. Step 2 Probe Warm-up 2. Connect the Dissolved Oxygen Probe to the interface.
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This note was uploaded on 09/13/2011 for the course BIO 1030 taught by Professor Bowl during the Spring '11 term at William & Mary.

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Dissolved Oxygen Sensor - Preparing the Dissolved Oxygen...

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