SENDGREEN 400CC Oxygen Absorbers for Food Storage (10X10 Packets 100 Pack) o2 absorbers food grade for Long Term Food Storage & Survival Oxygen Absorber Work in Mylar Bags Mason Jars Vacuum Bags

usage method? Step1: Get your foods, oxygen absorbers and Can be airtight container or mylar bag ready?oxygen absorber are not desiccant, and slightly moist foods can also extend the shelf life. Step2: Put everything you want to keep in a container and put a proper amount of oxygen absorber in it. Seal it well. Step3: Remove the air from the remaining oxygen absorber bags and seal them for next use. Tips?1?The oxygen absorber is made of iron powder, they will generate heat when reacting with O2 in the air, and the heat won't cause any danger. 2?The oxygen absorber will only remove 21% oxygen in the air, not all air, so there will be no vacuum effect.