These packets absorb the oxygen in stored dry food to help preserve product quality and protect the food from insects. To be effective, packets should be used only in containers that are a barrier against moisture and oxygen. Containers that work well with absorbers are foil pouches (item number 81381), metal cans with seamed lids, glass jars with gasketed metal lids, and PETE plastic bottles with twist-on lids. Absorber packets do not work well in containers such as plastic buckets or zip-seal plastic bags. Products stored with oxygen absorbers should be low in moisture and oil content. Each absorber is adequate for up to one gallon (four liters) of dry food. The bag of absorbers can be resealed with the impulse sealer (item number 81383). Unused absorbers can be stored in glass canning jars. By package only; 100 absorber packets per package.