Originally Posted by Chia
i have never put my dry yeast in the frige, as it sits out on the shelf at the LHBS. i do toss my hops in the fridge though.....maybe i will start putting my yeast in fridge too.....any temperature range that it should not go below?
I don't know the numbers, but I believe the 'Use by' date is base on storage at room temperatures and the time to about 50% viability. If stored at fridge temperatures, it will loose about 4% viability; will keep over 10 years before it gets down to 50% viability.
Someone else might know, but i believe dry yeast can be stored in a freezer without any damage.