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Gas-pak is a method used in the production of an anaerobic environment. It is used to culture bacteria which die or fail to grow in the presence of oxygen ( anaerobes ). These are commercially available, disposable sachets containing a dry powder or pellets, which, when mixed with water and kept in an appropriately sized airtight jar, produce ...
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Potassium metabisulfite is often used in the wine industry to both scavenge oxygen and provide a layer of gas that separates wine from oxygen. [citation needed] Foods prone to rancidification, including: Nuts and snacks; Whole fat dry foods; Processed, smoked and cured meats (including jerky and dried meat nuggets) Cheeses and dairy products
Thermodynamic diagrams are diagrams used to represent the thermodynamic states of a material (typically fluid) and the consequences of manipulating this material. For instance, a temperature– entropy diagram ( T–s diagram ) may be used to demonstrate the behavior of a fluid as it is changed by a compressor.
A packaging gas is used to pack sensitive materials such as food into a modified atmosphere environment. The gas used is usually inert , or of a nature that protects the integrity of the packaged goods, inhibiting unwanted chemical reactions such as food spoilage or oxidation .
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Such diagrams are available in the speciality literature. [1] [2] [3] The same information can be depicted in a normal orthogonal diagram, showing only two substances, implicitly using the feature that the sum of all three components is 100 percent. The diagrams below only concerns one fuel; the diagrams can be generalized to mixtures of fuels.
The main disadvantage of the magnesium-based heaters is the production of hydrogen gas. While it is not often a risk when used in the field, it may pose a fire hazard for consumer use. Alternative formulations have been developed to eliminate the hydrogen gas, such as the combination of aluminum chloride with calcium oxide (AlCl 3 /CaO) and ...