Checking to see if the oxygen absorber is doing its job. Let's talk about it. Want to support this channel? Buy me a coffee :-) https://www.buymeacoffee.com/DanZm AFFILIATE LINKS &; REFERRALS ─────────────── As an Amazon Affiliate‚ I earn from qualifying purchases from the links provided. By clicking on the links‚ you can explore the products and tools I use. https://www.amazon.com/shop/schoolreports --------------------------------------------------- Harvest Right - If you are thinking of buying a freeze dryer‚ please consider supporting us by purchasing through our link. It helps us and costs you nothing! https://affiliates.harvestright.com/995.html ─────────────── Before buying a freeze dryer‚ perhaps research to find out more about the downside of the machine; some people have problems with their machine and it's big and heavy and hard to return!