How to store holographic plates?

We recommend the following storage conditions:
Storage at "room-conditions" should not be above 20° C and limited to some days.

We highly recommend storage in a fridge at 4°C (for up to 1 year -U15- or 2
years-U08 and U25). No change in fog or sensitivity can be noticed. For information we have been storing color U08 plates for more than 5 years and they are identical, and give the same holograms than on day 1.

In case of long time storage: deepfreezing (-20°C or less)