100cc Oxygen Absorbers - Pack of 100 oxygen absorbers total

Of the three separate packs of O2 absorbers I ordered, these were the best. They were the only ones that had a demonstrable reaction and sealed my jars within the same day! I could even hear them (the canning lids) popping. If you are worried about getting ripped off buying bunk, look no further. These )2 absorbers actually work great!

Best price and all sealed and useable

They are perfect size for 500 ml mason jarsDefinitely recommend

These OxyFree oxygen absorbers meet my criteria...or in the case of preserving jerky, I can equally well say "meat" my criteria haha.The company packs these in a super-thick vacuum sealed bag, hard as a rock. There is a color-changing oxygen exposure indicator in the bag, which I really like: For the skeptic in all of us...well, just open the bag and expose it to oxygen, and make sure you see the color change on that little indicator that they include in each sealed bag.These also heat up immediately when exposed to the air, providing another piece of evidence that the oxygen-absorbing chemical reaction is occurring rapidly, as it should.But there's more...we use these in mason-type jars (Ball, Kerr), with the two-piece button lids, for storing dried fruits and veggies, mostly. As the oxygen is removed from the air in the jar, the button lid inverts (pops), like a vacuum seal.With all of these indications, I can be pretty confident that this product is indeed doing what it's intended to do. No more oxygen accelerating the aging of our food. Good old oxygen sustains us throughout life, and then one way or another it seems to take us all down eventually...but in the meantime oxygen doesn't have to ruin your long-term-stored foods. Jarring, I know, isn't that what we're talking about here? :) Five stars for OxyFree oxygen absorption!

I purchased these more than once they work as expected