Hanna Instruments 1413 S/cm (EC) Calibration Solution, 500 mL Odor Control & Filters You can effortlessly control up

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Hanna Instruments 1413 S/cm (EC) Calibration Solution, 500 mL Odor Control & Filters You can effortlessly control upHI7031M is a premium quality 1,413 S cm conductivity standard that is prepared against a NIST traceable potassium chloride solution. Hanna conductivity solutions have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of conductivity standards have been specially formulated to have an expiration of 5 years from the date of manufacture for an