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Conductivity Cells

Make accurate measurements and analyses with conductivity cells

By Mike Tracy
Select the conductivity cells you need to test a solution's ability to carry electrical current or the presence of dissolved solids in it. Because the results of the test help you analyze the properties of the substance, accuracy is essential. As you look for industrial conductivity cells, note that they go by a number of names: electronic conductivity cell, thermal conductivity cell, electrode or probes.

When purchasing electronic conductivity cells be aware of the critical parameters of the devices, including the conductivity cell constant, response time and conductivity range. Use the specifications of different makes and models to determine the model of conductivity cell that is right for your business. Remember that accuracy and ease of use are critical. Before choosing conductivity cells, consider the following:

1. How do the key features of industrial conductivity cells differ?

2. What mounting options will work best for my projects?

3. How do the various features impact the price I might expect to pay for a conductivity cell?

 

Find conductivity cells with the critical specifications you want

In addition to the features mentioned above, look for temperature compensation, temperature sensors, water resistance and output of total dissolved solids (TDS). Note that conductivity cell construction can vary, using graphite, titanium and stainless steel. Weigh these features as you make your selections from a conductivity cell distributor.
Try: At the GlobalSpec website, you can find a database of 105 companies that specialize in conductivity cells and related instruments. Select a few firms and investigate their products. Topac carries a variety of 2-electrode and 4-electrode cells. Compare the features and prices of their offerings as you determine what you want.

Sample conductivity cells with different mounting options

Mounting style directly impacts ease of use. Consider in-line, insertion, flow-through and hand held devices for your projects. Order samples of each option from a conductivity cell vendor.
Try: David Inotek Instruments distributes Amber Science conductivity cells. They have a variety of "dip type," "flow thru," "multipurpose" and "flow" cells as well as a micro flow cell. Check the product information for further details. For information on thermal conductivity cells, check out the ThermTest website. There you can review the descriptions for products to determine if thermal conductivity cells best meet your needs. Sample a model from the online catalog.

Buy your conductivity cells at competitive prices

Different features, specifications, and materials influence conductivity cell prices, which vary widely. Make a list of "must-have" and "nice-to-have" features and specifications. Then, use the list to determine pricing.
Try: JUMO Process Control specializes in electrical instruments. Conductivity cell supplier Thermo Fisher Scientific carries an extensive list of devices with different features. Review the features and correlate the differences in pricing.

 

  • Make sure your conductivity cell has the mounting style you need. Though much less expensive, dip types won't work in a pipeline situation and flow cells aren't ideal for work at a lab bench.

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