Need to check the accuracy of your CareSens meter for any reason - this is your test solution. The control solution test must be conducted at room temperature (20 - 25°C). It is recommended that the control solution is kept at room temperature for 30 minutes before testing. The control solution should be shaken well before use, and the first drop should be discarded and the dispenser top wiped clean prior to using the subsequent drop for the test.
Please note that once opened, the control solution will expire after 90 days.