[Bill Little]

The “Breathing Bags” allow the transfer of simple and complex gas molecules through the plastic wall of the bag — carbon dioxide and oxygen in particular. A true “breathing” bag can be utilized in place of a “barrier” bag as is used in plastic polyethylene bags. Carbon dioxide exits the bags at 4 times the rate oxygen enters the bags, thereby constantly purging the water of toxic carbon dioxide, and allowing oxygen to replace it in the water.
Breathing bags can be sealed using all of the current methods: rubber bands, twist ties, metal clips, etc. An even better way for fast efficient sealing is with a bar type heat sealer. The plastic used in the “Breathing Bags” readily seals with heat. Heat sealing can be done much more quickly than other methods and greatly increases the speed with which bags can be handled and sealed. The breathing bag material is manufacturered by Kordon. The bags are manufacturered in several sizes or in a roll. I don’t know if the material is available outside the USA. If you wish more information on the Styrofoam containers I will post that information later.