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US 4,377,554 AGranted
Generation of microaerophilic atmosphere
AssigneeBecton, Dickinson and Company
InventorRaymond Johnson
Life of this patent
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Abstract
A gas generating package includes gas producing material present at a stoichiometric amount such that when contacted with water hydrogen is generated at a level sufficient to combine with a portion of the oxygen present in a closed container into which the package is placed. A catalyst for the hydrogen-oxygen reaction is provided exterior of the package. The package also includes a wick treated to permit introduction of water to the gas producing material at a predetermined level and rate.
Claims6
A unitary package for generating a microaerophilic atmosphere comprising
- (a) a flexible sealed package;
- (b) material in a first compartment of said package for generating hydrogen, said hydrogen generating material being present in a stocihiometric amount sufficient to generate hydrogen to react with from about 20 to about 80 percent of the oxygen of a gas tight container into which the package is inserted.
- (c) a second compartment in said package for receiving water, said second compartment being in fluid communication with said first compartment by means of a fluid channel;
- and
- (d) flow restricting means in said fluid channel for establishing predetermined wet-over and condensation times when said package is broken and water is inserted in said compartment, said wet-over time being from about 1.5 to about 3 minutes and said condensation time being from about 10 to about 60 minutes.
2 more elements
Dependencies are inferred from the claim text.