ULTRA-VIOLET RAYS
USE AS STERILISING AGENT P.A. AUCKLAND, June 1 Comments on evidence given in Wei lington concerning the sterilisation o drinking utensils by means of ultra violent light were made at today s sit ting of the Licensing Commission b] Dr F. L. Maclean, for the Director General of Health. The tomments con : tamed a written document forwardec from Wellington. ' Ultra-violet rays, said Dr. Maclean; were capable of destroying bacteria1 but there were certain factors which in practice limited their use. They haa only slight penetrating powers, and. . could not pass through ordinary glass! Water could be sterilised by ultra-vio< let rays only if it was clear and if ih was« exposed to the rays in a thnv
sheet. J Prolonged or frequent exposure ta the rays was harmful to the humanf being, particularly to the eyes. . For the washing of eating and drink* ing utensils both hand and mechanical washing could give satisfactory results* It was the general opinibn that brushy ing was necessary to clean glasses prol perly..
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Evening Post, Volume CXXXIX, Issue 129, 2 June 1945, Page 5
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171ULTRA-VIOLET RAYS Evening Post, Volume CXXXIX, Issue 129, 2 June 1945, Page 5
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