If the sheets are stored in their sealed packets, in room temperature they can be stored for the entire duration of the shelf life. The expiration date of the product is 2 years after production. The factors helping the correct storage of the sheets are:
- Temperature: sheets should be stored in a temperature controlled environment. The room temperature should not drop below 68F and should not exceed 79F
- The humidity in the should be between 50% and 60%
Even if the packet is opened, if it is closed and resealed in the zip lock foil bag (that it shipped with) then the product also can last for many months.