scope:

Specifies a method for determining the relative effectiveness of a wood preservative applied without subsequent surface coating to wood which is to be exposed outdoors out of contact with the ground. The method shall be used in situations where the standard EN 330, a method of test for wood preservatives applied in combination with a coating, is not applicable and shall be used in order to classify the aggressiveness of the exposure sites. The method is applicable to the testing of commercial or experimental preservatives applied by techniques appropriate to commercial practice. The method is applicable to chemical products used individually or in combination to prevent the development of decay in wood and, where suitable, in wood-based products. The method may also, after appropriate modification, be used for testing natural durability.