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Containers designed for temporary storage of liquid oxygen (LOX) prior to its distribution and use. These containers usually consist of a large capacity (e.g., 10, 100 liter) double vessel bulk tank; an insulated inner vessel for containing the liquid oxygen at a temperature of -183 degrees C (-297 degrees F) and an outer vessel for protection. Vacuum in the space between both vessels provides insulation to the liquid oxygen from the environment temperature; the container should include a vent line for slow release of the gas from the slowly boiling liquid oxygen due to the higher room temperature, especially when the container is not used for a long period of time. Liquid oxygen containers are used in supply centers and in most large healthcare facilities before distribution of oxygen either as liquid or gas; some smaller containers are used at home to fill the canisters of portable oxygen delivery units.
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