HI7031M is a premium 1,413 μS/cm conductivity standard prepared from a NIST-traceable potassium chloride solution. Hanna conductivity solutions clearly indicate the lot number and expiration date on the label and use tamper-evident seals to ensure solution quality. Hanna's conductivity standard line is specially formulated, and unopened bottles have a 5-year shelf life from the date of manufacture.
Each bottle is printed with a temperature chart of actual μS/cm values at different temperatures
Airtight bottles with tamper-evident seals to ensure quality