Oxygen Absorber Pack
Oxygen Absorber Pack - Related Videos
07:51
Gas Absorber
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2023
Source: Michael G. Benton and Kerry M. Dooley, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Gas absorbers are used to remove contaminants from gas streams. Multiple designs are used to accomplish this objective1. A packed bed column uses gas and liquid streams running counter to each other in a column packed with loose packing materials, such as ceramics, metals, and plastics, or structured packing1. The packed bed uses surface area created by the packing to...
10:39
Single and Two-phase Flow in a Packed Bed Reactor
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA The goal of this experiment is to determine the magnitude of maldistribution in typical packed bed reactors in both single phase and two-phase (gas-liquid) flow and evaluate the effects of this maldistribution on pressure drop. The concepts of residence time distribution and dispersion are introduced through the use of tracers, and these concepts are related to physical...
13:44
Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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Cited by 6 •
2012
This protocol outlines the simulation, fabrication and characterization of THz metamaterial absorbers. Such absorbers, when coupled with an appropriate sensor, have applications in THz imaging and spectroscopy.
08:58
Cerebral Blood Oxygenation Measurement Based on Oxygen-dependent Quenching of Phosphorescence
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Cited by 27 •
2011
We present an experimental procedure for measuring the partial pressure of oxygen (pO2) in cerebral vasculature based on oxygen-dependent quenching of phosphorescence. Animal preparation and imaging procedures were outlined for both large field of view CCD-based imaging of pO2 in rats and 2-photon excitation based imaging of pO2 in mice.
09:08
Detecting Reactive Oxygen Species
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2023
Reactive oxygen species are chemically active, oxygen-derived molecules capable of oxidizing other molecules. Because of their reactive nature, there are many deleterious effects associated with unchecked ROS production, including structural damage to DNA and other biological molecules. However, ROS can also be mediators of physiological signaling. There is accumulating evidence that ROS play significant roles in everything from activation of transcription factors to the mediation of...
FAQs
The oxygen-removal reaction depends on iron powder undergoing oxidation when oxygen and moisture are available. As the reaction proceeds, molecular oxygen is consumed and the concentration inside the sealed container falls. This chemical mechanism explains why the pack can shift a culture environment toward conditions favorable for anaerobic biology.
Moisture enables the oxidation process involving the iron powder, allowing the pack to consume oxygen more effectively within the enclosed environment. Some formulations include catalysts or salts that accelerate this reaction. These added components influence how quickly the pack establishes low-oxygen conditions, although the underlying oxygen-removal process remains oxidation.
An oxygen absorber pack offers a practical alternative to a specialized anaerobic chamber for selected laboratory applications. It works within a sealed culture container rather than requiring access to a dedicated chamber. This makes the approach useful when researchers need low-oxygen conditions for particular cultures, while its suitability depends on the application.
A basic workflow places the pack and the relevant culture within a sealed culture container, allowing the oxidation reaction to reduce the enclosed oxygen concentration. The container can then support incubation under low-oxygen conditions. The same setup may also be used when cultures require anaerobic conditions during transport or storage.
By lowering oxygen around a culture, the method supports the growth and study of anaerobic bacteria. Researchers can use the resulting environment during incubation, transport, or storage, depending on the experimental need. Its main biological value is maintaining conditions in which oxygen-sensitive bacteria can be examined without relying on continuous exposure to open air.
Their use extends to situations in which an anaerobic culture must remain in a low-oxygen environment while being moved or held for later work. The sealed format helps preserve the intended atmosphere during transport and storage. In this way, the packs provide a practical option for handling oxygen-sensitive biological materials across multiple stages of a laboratory workflow.