Wood preservatives - Determination of the protective effectiveness against wood destroying basidiomycetes - Application by surface treatment

This document specifies a standardized test method for evaluating the preventive efficacy of wood preservatives against wood-decaying basidiomycetes. The procedure focuses specifically on the surface treatment approach, where the preservative is applied to the exterior of the wood specimen. It provides detailed guidance on the preparation of test pieces, the application techniques, and the conditions required for the subsequent exposure to fungal cultures. By establishing a uniform protocol, this resource enables consistent comparison of different chemical formulations used in the protection of timber. The methodology outlines the criteria for assessing the extent of decay after a defined incubation period. It addresses the necessary controls and replication to ensure the reliability of the results obtained during the assessment process. This approach allows for the determination of whether a specific treatment effectively inhibits the growth of fungal organisms under laboratory conditions. The text includes definitions of key terms and references to relevant biological isolates used in the testing procedure. It serves as a technical reference for manufacturers and testing laboratories involved in the development and quality assurance of wood protection products.