In Suriname three different field test sites have been used to verify the biological durability of CCA-treated wood and a range of wood species including lesser-known and lesser-used wood species. In total 37 tropical wood species were tested untreated and for 17 of the less durable species CCA-treatments were included as well. Although the three sites are located in the tropical region they differ with regard to soil and micro-climatic conditions. This is reflected by the results gathered from the durability tests. The observed variability shows that relevant conclusions on natural durability and efficacy of a preservative treatment can only be gained if different test sites are used.

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