The IONICS 1.413 µs - 250 mL solution will allow you to check and correct the calibration of your EC tester.

Calibrating your EC tester:

• Open the sachet of EC 1.413.
• Dip the electrode of your tester into the EC 1.413.
• Turn on your EC tester, then wait for the EC rate to stabilize on the screen.
• If your tester indicates a value other than 1.413 in the buffer solution, set the EC rate indicated on the screen to 1.4 EC
• Be careful not to reuse the calibration solution used during the operation.