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Yes, DNA does have a shelf life. It has a shelf life of about four years if it is properly preserved.
Yes
Yes, I have seen it done. Ammo has a long shelf life but it will protect it in humid conditions.
I found a few sites that say the shelf life is two years.
Yes
Yes, there are different ways. If the cover is off, the product oxidizes and there is also a shelf life.
yes
Yes, it prolongs shelf life.
Yes, hydrogenation of fat does increase its shelf life. The hydrogenation of the unsaturated fats usually produces the saturated fats.
Yes Ambien 10 mg tablets have a shelf life a shelf life of about two and a half years. I have a bottle which was prescribed in July 2002 with an expiry date of Dec 2004.
Yes, and this is determined by the manufacturer.
Yes.