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Neptune Systems Conductivity Calibration Solution - 53000 Microsiemens
A 53,000 microsiemens (53 mS) calibration solution from Neptune Systems for calibrating conductivity probes and PM2 modules used for saltwater salinity monitoring on Apex controllers. Regular calibration every 3 to 6 months keeps salinity readings reliable; a separate 447 µS solution is used for freshwater applications.
Price: $6.49 USD
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