A method for screening the vapour-phase of volatile compounds as nematicides

D. J. F. Brown, T. J. W. Alphey


The method described here is particularly useful when chemicals with low vapour pressure characteristics are being tested for nematoxic effects.Also, it can be easily modified to facilitate the exposure of soil insecta to the vapour-phase of chemicals. Several sets of apparatus can be operated simultaneously from a single vacuum/pressure station. Care must be taken to exhaust volatiles emanating from the system safely out of the laboratory. Some vapours may react with the perspex and/or rubber components in the apparatus e.g. petroleum vapours will necessitate the replacement of the rubber by neoprene and the perspex by glass components. It should also be noted that under certain conditions some rubber and other tubings can liberate volatiles.

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