Battery cold helium
helium battery is designed to preserve and maintain the required temperature for several hours. To use should be through the top valve bag filling 400g water. The valve on the package one-sided and does not let liquid out. After a few minutes the water becomes gel-like package. Before using helium package need to put out the freezer for several hours. Use a Thermos or batteries automobile refrigerators.
In beekeeping helium batteries used to maintain the temperature during transportation frozen royal jelly. Even in batteries used to support high temperatures. For example, during transportation or queen bee brood.
