Significance and Use
This test method is useful in the development of new wood preservatives and preservative systems by evaluating the minimum preservative retention to prevent decay under laboratory conditions. The results are used to facilitate target retentions in subsequent tests for effectiveness against termites (see Test Method D 3345) and in field stakes (see Test Method D 1758). The sections on Treatment and Preservative Permanence are referenced by other ASTM standards. The test method assumes that the test blocks exposed to certain conditions after treatment will achieve equilibrium, and will return to the same equilibrium after exposure to fungi. This assumption may lead to weight loss that is not due to decay. The test uses live cultures of fungal organisms that require careful colonization, storage, and feeding to remain viable strains.
1.1 This test method covers determination of the minimum amount of preservative that prevents decay of selected species of wood by selected fungi under optimum laboratory conditions.
1.2 The requirements for preparation of the material for testing and the test procedure appear in the following order:
|Summary of Test Method||3|
|Significance and Use||4|
|Wood and Test Blocks||7|
|Preparation of Test Cultures||10|
|Preparation and Impregnation of Test Blocks||11|
|Conditioning Treated Blocks||12|
|Stabilization of Treated Test Blocks and Placement in Culture Bottles||14|
|Incubation and Duration of Test||15|
|Handling Test Blocks After Exposure to Test Fungi||16|
|Calculation of Weight Losses||17|
|Evaluation of Test Results||18|
|Refining the Threshold||19|
|Precision and Bias||21|
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D841 Specification for Nitration Grade Toluene
D1193 Specification for Reagent Water
D1758 Test Method of Evaluating Wood Preservatives by Field Tests with Stakes
D3345 Test Method for Laboratory Evaluation of Wood and Other Cellulosic Materials for Resistance to Termites
D3507 Test Methods for Penetration of Preservatives in Wood and for Differentiating Between Heartwood and Sapwood
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
AWPA E10 Testing Wood Preservatives by Laboratory Soil-Block Cultures
cultures; laboratory; preservatives; soil block; Chemical analysis--wood products; Visual examination--wood preservatives; Coriolus versicolor; Decay rates; Fungal influence/resistance; Gloephyllum trabeum; Lentinus lepidus; Polyporus versicolor; Poria placenta; Soil; Soilblock culture testing; Weight loss; Wood preservatives; Conditioning; Wood products;
ICS Number Code 71.100.50 (Wood-protecting chemicals)
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Citing ASTM Standards
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