The speed at which air is drawn into a fume hood is of great importance for the safe and effective operation of a fume hood. A speed that is too high or too low can compromise the performance of the fume hood, leaving those near the hood in danger. So why does this airspeed matter? What is so significant about the face velocity measurement of a fume hood? What is a Fume Hood Face? If we are going ...
Exhaled air dispersion distances during noninvasive ventilation via different Respironics face masks
Abstract Background: As part of our influenza pandemic preparedness, we studied the exhaled air dispersion distances and directions through two different face masks (Respironics; Murrysville, PA) attached to a human-patient simulator (HPS) during noninvasive positive-pressure ventilation (NPPV) in an isolation room with pressure of -5 Pa. Methods: The HPS was positioned at 45 degrees on ...
By Inspir Labs
Abstract Keeping a contamination free environment in the laboratory has commonly been achieved by one of two ways: a flame or a biosafety cabinet (BSC). However, it has been frequently observed that the two practices have been combined, where a heat source has been used within the BSC. As flames require flammable gasses and cause hot air to rise, it was hypothesized that these could lead to a ...
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