HI7030/1L is a premium quality 12, 880 µS/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 has been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened bottle.

• Temperature chart of the actual µS/cm value at various temperatures printed on each bottle
• Air tight bottle with tamper-proof seal to ensure quality
• Specially formulated to have an expiration of 5 years from manufacture for an unopened bottle