Conductivity Control in the Laboratory

Laboratory equipment has undergone significant advancement in the last decade, facilitating not only the overall efficiency of the laboratory process but also the precision and accuracy of the results. Conductivity controllers belong to this important category of equipment and are available in various models and specifications.

This article will discuss three specific Kalstein brand devices: the In-Line Conductivity Controller (YR01839), the Pocket Conductivity Meter ยฐC/ยฐF (YR01807), and the Portable Conductivity / TDS / Salinity Meter (YR01818), along with the Benchtop pH/Conductivity Meter (YR01836 โ€“ YR01836-1).

Model Typesย 

โ€“ Specifications of In-Line Conductivity Controller (YR01839)

This controller offers a measurement range from 0.01 to 200.0mS/cm, providing a resolution ranging from 0.001 to 1 and an accuracy of ยฑ1% F.S. It has 1 to 3 calibration points with calibration solutions of 84uS, 1413uS, 12.88mS, up to 111.8mS.

โ€“ Features of Pocket Conductivity Meter ยฐC/ยฐF (YR01807)

Easily portable, this meter offers a measurement range of 0.1 to 19.99 mS/cm. It provides a resolution of 0.01 mS/cm with an accuracy of ยฑ1% F.S. Unlike the previous model, it allows only 1 calibration point with a calibration solution of 12.88 mS/cm.

โ€“ Analysis of Conductivity / TDS / Salinity Portable Meter (YR01818)

This instrument provides a measurement range of 0.01 to 200.0mS/cm, an exceptional accuracy of ยฑ0.5% and a resolution of 0.001 to 1. It offers 1 to 5 calibration points with calibration solutions of 10ยตS, 84ยตS, 1413ยตS, 12.88mS, up to 111.8mS.

โ€“ Benchtop pH/Conductivity Meter Study (YR01836 โ€“ YR01836-1)

This instrument features an exceptionally wide measurement range, ranging from -2,000 to 20,000pH. It offers a selectable resolution of 0.001 to 0.1pH with an accuracy of ยฑ0.002pH. It allows up to 5 calibration points, providing pH buffer options (US, NIST, DIN, 2 custom buffers). This instrument, while measuring pH, has conductivity measurement capabilities.

Comparison of the instrumentsย 

The first three instruments have similarities in technical terms, but the range, resolution, and calibration points are variable. The pocket meter is notable for its portability, while the YR01818 offers higher accuracy.

The Benchtop pH/Conductivity Meter excels in multifunctionality. Although technically different from conductivity meters, its ability to perform two roles is indicative of the advancement in laboratory equipment.

The precise and specific use of each instrument will depend mainly on the type of samples to be measured and the specific needs of the laboratory. Therefore, it is crucial to know the technical specificities of each instrument in order to make the right choice.