Conductivity Probe Directions

Conductivity Probe Directions - Conductivity Probe(Order...

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Conductivity Probe (Order Code CON-BTA or CON-DIN) The Conductivity Probe can be used to measure either solution conductivity or total ion concentration of aqueous samples being investigated in the field or in the laboratory. Conductivity is one of the easiest environmental tests of aquatic samples. Even though it does not tell you specific ions that are present, it does quickly determine the total concentration of ions in a sample. It can be used to perform a wide variety of tests or planned experiments to determine the changes in or levels of total dissolved ions or salinity: Allow students to qualitatively see the difference between the ionic and molecular nature of substance in aqueous solution. This can include differences in strength of weak acids and bases, or the number of ions that an ionic substance dissociates into per formula unit. Use the probe to confirm the direct relationship between conductivity and ion concentration in an aqueous solution. Concentrations of unknown samples can then be determined. Measure changes in conductivity resulting from photosynthesis in aquatic plants, with the resulting decrease in bicarbonate-ion concentration from carbon dioxide. Use this sensor for an accurate on-site measurement of total dissolved solids (TDS) in a stream or lake survey. Monitor the rate of reaction in a chemical reaction in which dissolved ions and solution conductivity varies with time due to an ionic specie being consumed or produced. Perform a conductivity titration to determine when stoichiometric quantities of two substances have been combined. Use the Conductivity Probe to determine the rate at which an ionic species diffuses through a membrane, such as dialysis tubing. Monitor changes in conductivity or total dissolved solids in an aquarium containing aquatic plants and animals. These changes could be due to photosynthesis or respiration. Collecting Data with the Conductivity Probe This sensor can be used with the following interfaces to collect data: Vernier LabQuest™ as a standalone device or with a computer Vernier LabPro ® with a computer, TI graphing calculator, or Palm ® handheld Vernier Go! ® Link Vernier EasyLink ® Vernier SensorDAQ™ CBL 2™ 2 Here is the general procedure to follow when using the Conductivity Probe: 1. Connect the Conductivity Probe to the interface. 2. Start the data-collection software 1 . 3. The software will identify the Conductivity Probe and load a default data- collection setup. You are now ready to collect data. Data-Collection Software This sensor can be used with an interface and the following data-collection software. Logger Pro 3 This computer program is used with LabQuest, LabPro, or Go!Link. Logger
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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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Conductivity Probe Directions - Conductivity Probe(Order...

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