Abstract
THE standard method1 of measuring the toxicity of wood preservatives consists of exposing small wood blocks, containing a range of loadings of the preservative, to attack by a specific wood-destroying fungus or insect and noting the loading required to inhibit attack. The blocks are prepared by impregnating them completely with different strength solutions of the preservative in an appropriate volatile solvent which is afterwards allowed to evaporate off. The average concentration of preservative substance left in each block is obtained from the weight of solution absorbed.
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References
British Standards Institution, B.S. 838 (1939); American Society for Testing Materials, D 1413-56T (1956); Deutscher Normenausschuss, DIN-52 623 (1949).
Cockcroft, R., Wood, 22, 331 (1957).
Becker, G., Holz als Roh- und Werkstoff, 10, 341 (1952).
Bletchly, J. D., and Taylor, J. M., Trans. Eleventh Int. Congr. Ent. Vienna (1960).
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SMITH, D., COCKCROFT, R. A Method of obtaining Uniform Distribution of Wood Preservatives in Toxicity Test Blocks. Nature 189, 163–164 (1961). https://doi.org/10.1038/189163a0
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DOI: https://doi.org/10.1038/189163a0
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