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Updated: Aug 11, 2026

Fabrication and Operation of an Oxygen Insert for Adherent Cellular Cultures
Published on: January 6, 2010
Oxygen concentration from room air. A new source for oxygen therapy in the home
Abstract:
Most oxygen concentrators use molecular sieves that selectively adsorb molecules according to their size and polarity. Their present rental cost is about half that of the traditional oxygen tanks or liquid-oxygen systems. Two concentrators have been tested. They are able to produce both high oxygen concentrations (95% oxygen at 2 L/min) and high flow rates (10 L/min with 40% oxygen), which remained stable for one week. After 24 hours of continuous use, neither machine concentrated toxic gases from room air in a city. Both were suitable for use with 24% and 28% Venturi masks.
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Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
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Nasal Cannulas
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Administering oxygen by mask is a common nursing intervention that provides supplemental oxygen to patients with respiratory distress or chronic lung conditions. This procedure involves delivering oxygen at a specified rate through a face mask connected to an oxygen source.
Equipment
The equipment necessary for this procedure includes: