Description
QA Instruments Conductivity Standard 1423uS/cm
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Calibration point: 1413 µS/cm is one of the most common mid-range conductivity standards. It’s often used to calibrate instruments that measure in the low-to-medium conductivity range (freshwater, drinking water, hydroponics, aquaculture). 
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Application range: - 
Hydroponics & horticulture – to measure nutrient solution strength. 
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Aquaculture – to check salinity and water quality. 
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Environmental water testing – streams, lakes, groundwater monitoring. 
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Laboratories – general water quality control. 
 
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Why 1413 specifically? - 
It sits in the middle of the EC range relevant for many natural waters. 
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It’s a convenient value for calibrating meters that will be measuring between very pure water (~0.05 µS/cm) and seawater (~50,000 µS/cm). 
 
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In short: Conductivity Standard 1413 µS/cm is a reference solution used to calibrate and verify conductivity meters for general water testing and quality control in freshwater to moderately mineralized water applications
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