I have a Suunto A-10. A couple of months ago I went on a overnight snowshoe/backcountry snowboarding trip in the Adirondacks, the temp was about 5 - 20 Fahrenheit. When I got home I noticed my compass had an air bubble in the liquid. I really have no idea what exactly the liquid consists of, some sort of silicon/alcohol mixture maybe? I am sure someone here can answer that. Anyway the bubble has since gone. Should I be concerned about the integrity of my compass or should this be expected with the low temps due to the liquid possibly expanding/contracting?

As this is my only compass and they are pretty cheap I should probably have an additional one anyway, but am curious about the air bubble all the same.

Thanks,
Mike