Wood situated in sea water along the Atlantic coasts of the Nordic countries is attacked by marine wood boring organisms. Timber constructions in these waters therefore must be preservative treated. In order to evaluate the effect of various preservatives against marine wood borers, the Nordic Wood Preservation Council (NWPC) organized a rather extensive trial in 1972. In the absence of and while awaiting international standard methods for testing preservatives it was felt that there was a need for a Nordic standard method. The 1972 trial was consequently planned and performed in close cooperation with the standardisation work. The complete standard method was published by NWPC in 1973 (NWPC Standard No. 1.4.2.2/73).

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