The purpose of the work we have undertaken so far has been to try to quantify the volatile losses which occur in treated timber, and to examine some of the factors which influence these losses. The preservative compound chosen for the initial part of the programme was the contact insecticide g-BHC. This was attractive for several reasons, not the least of which was that specific and sensitive analysis was possible using gas-liquid chromatography. In addition to this, g-BHC is of major importance in insect control in both pre-treatment and remedial treatment, the latter frequently being subject to a written guarantee.

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