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Vitamin C powder viability?
How can one determine, WITHOUT access to a laboratory, if the L-ascorbic acid powder one has is still good, i.e. would STILL inhibit oxidation?
I have some that I purchased in May of 2013. It’s been in its original plastic bag, which I put into a jar, then into an old brown sock, then into a paper bag, stored in our dry basement. SO it’s been kept dry & in the dark. And yes, the sock is clean, not stinky.I put some of the powder into water in a clear jar. It’s been on a window sill since Monday. It still looks clear to me. I thought it would darken as it broke down reacting with oxygen. -
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