These came damaged (not the company's fault) , they sent new ones, these are the best absorbers on the market. Customer service was amazing

These packets do absorb O2 effectively. I did expect indicators of effectiveness on each packet, however.

I know it's working because I use in resealable canning jars, and opening them I feel the suction coming from the removal of 21% of the gas (i.e. the O2).

I have had such bad luck with different brands, ones that literally don't work at all, or are seriously under powered, 300 cc ones seem to require twice the amount recommenced IF you can find ones that are actually real. If you want to seal food long term don't skimp on the absorbers.

Great quality. Have come to order from this company with ease. Absorbers came individually sealed!! Which was fantastic. Only one at a time without having to hurry and reseal so other absorbers stay fresh and without any impact. I wish like hell all the other absorbers could be sealed individually as well. Relieves a lot of stress and hurry to preserving the other absorbers.

Individually well-wrapped in heavy plastic sections. In my first use, I sealed a 5 gallon mylar bag of rice in a five gallon plastic pail, after getting the right heat setting for the mylar and doing a rather good job of sealing (if i must say so myself), I found I had not gotten all the air out nearly as good as I thought. I had a rather large amount of air puffing up the top of the bag. I put it aside and decided that I would re-pack it later.....well when i opened the pail two days later to re=pack the rice, the mylar bag was sucked in really tight around the rice....fantastic job from just one of these absorbers. My estimate of the air i didn't get out would be equivalent to a quart jar....need to practice that procedure a few times, but the absorber really did the job!