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Shelf life of raw materials in products!
One of the products my company makes comprised of 99.6% Glycerin.The Glycerin from the supplier is given only a 2 year shelf life.When we mix the Glycerin with the flavor we are giving it a 3 year shelf life from the date of Compounding.How does this work out in giving a shelf life to a final product? Does this depend on just the stability or what?
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4 Replies
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Final product depends on stability for shelf life-Raw material can be re-analyzed if storage exceeds manufacturers stated shelf life. -
Shelf life information must always be interpreted with considerable caution.
Often, expiry dates are applied to items purely on a whim without any consideration of what may be considered logical.
I have seen bags of coal with “best before” dates of 2 years ahead and supermarket packs of salt with similar markings. Don’t the packers realise that these items have been around for gazillions of years and that another 2 or three will make not a jot of difference to their constitution or safety?
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the shelf life is simply the period over which the supplier can guarantee the material will remain fit for use; it may well remain fit for use beyond that time in practise, but the supplier can take no responsibility for it unless it’s re-tested and re-certified with a new expiry date
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thank you gentlemen!
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