GroLine 1413 µS/cm Conductivity Standard with Certificate (230mL Bottle) eligible-for-discount Great for environmental and agricultural

Great for environmental and agricultural testing

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Big Time Exterminator is non-toxic and safe for all plant

The CenturionPro Original Standard System comes all-inclusive with the largest hopper in the industry

It is designed to increase response time and maximize the life of Bluelab pH pens and pH probes

GroLine 1413 µS/cm Conductivity Standard with Certificate (230mL Bottle) eligible-for-discount Great for environmental and agriculturalHI7031 023 is a GroLine 1,413 S cm conductivity standard that is prepared against a NIST traceable potassium chloride solution and supplied with a certificate of analysis. 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