|Test Method: AWPA Standard, E14-94 -Standard Method Of Evaluating Wood Preservatives In A Soil Bed.
1/2x1x10 inch (13x25x254 mm) treated (and untreated) stakes are inserted half-way into the soilbed. The soilbed is saturated with water each week and the soilbed room temperature is maintained at 85°F (29°C) to accelerate decay. At specified time intervals each stake is pulled and rated for degree of decay. The stake is removed from the soilbed when a light bending force causes it to fail.
|Decay stakes in a soilbed. Also shown is water-spraying apparatus.|
|Test Method: AWPA Standard, E10-91, Standard Method of Testing Wood Preservatives by Laboratory Soil-Block Cultures, 1999. Also, ASTM D1413 and WDMA TM-1.
3/4 x 3/4 x 3/4 inch (19 x 19 x 19 mm), or project-specific size treated (and untreated) soil block specimens are dried, weighed and innoculated with decay fungi in a jar containing soil, which is then maintained at approximately 80°F (27°C) and 80% RH. After a specified time period the soil block specimens are removed, dried and weighed to determine the weight loss due to decay.
|Test Method: MTU developed (Click link for detailed test method)
4x6 inch x board thickness (102x152 mm) treated (and untreated) specimens are sprayed with inoculum and placed horizontally on a screen, which is enclosed inside a container and maintained at 80°F (27°C). The bottom of the container is covered with water, which does not contact the specimens, to achieve ~100% RH. At specified time intervals the top surface of each specimen is rated for degree of mold coverage.