Hanna EC Calibration Solution 1.413 mS. 20 ml.

The HI70031C is a 1,413 µS/cm conductivity standard solution that is NIST traceable and comes with a certificate of analysis. Each sachet has the lot number and expiration date stamped on it and is made of light-blocking material to ensure the purity of the solution. Hanna's line of conductivity solutions has been specially formulated to have a shelf life of 5 years from the date of manufacture. This time only applies to an unopened sachet. The HI70031C includes 25 sachets containing 20 mL of solution.