NWPC INFORMATION NO. 40/20
RESULTS FROM NWPC FIELD TRIALS 1968 TO 1996
Jöran Jermer and Fred G Evans
This report gives results from the NWPC field trials started between 1968 and 1996. The tests have been performed in co-operation with the Danish Technological Institute, the Technical Research Centre of Finland, the Norwegian Institute of Wood Technology and the Department of Forest Products (since 2018 Department of Forest Biomaterials and Technology) at the Swedish University of Agricultural Sciences. The field trials were carried out according to the NWPC Standard No. 188.8.131.52./71 “Testing of wood preservatives. Mycological tests. Field test – a field test with stakes” and since 1986 according to prEN 252/EN 252 “Field test method for determining the relative protective effectiveness of a wood preservative in ground contact”.