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The control by ventilation of airborne bacterial transfer between hospital patients, and its assessment by means of a particle tracer: I. An airborne-particle tracer for cross-infection studies

Published online by Cambridge University Press:  15 May 2009

N. Foord  and
O. M. Lidwell
N. Foord
Affiliation:
Cross-Infection Reference Laboratory, Central Public Health Laboratory, Colindale Avenue, London, NW9 5HT
O. M. Lidwell
Affiliation:
Cross-Infection Reference Laboratory, Central Public Health Laboratory, Colindale Avenue, London, NW9 5HT
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Summary

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A simple and convenient particle tracer for studies of the effectiveness of isolation units and other places in limiting the airborne transfer of bacteria is described. Particles of potassium iodide 7–8 µm. diameter are generated by spraying from solution and collected on membrane filters. The particles can be identified by development with 0·1 % acid palladium chloride solution, when dark brown spots approximately 100 µm. in diameter are produced.

Type
Research Article
Information
Journal of Hygiene , Volume 70 , Issue 2 , June 1972 , pp. 279 - 286
Copyright
Copyright © Cambridge University Press 1972

References

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