1.1 This test method covers determination of the minimum amount of preservative that is effective in preventing 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:

Section Summary of Method 3 Apparatus 4 Reagents 5 Wood and Test Blocks 6 Test Fungi 7 Culture Media 8 Preparation of Test Cultures 9 Preparation and Impregnation of Test Blocks 10 Conditioning of Treated Blocks 11 Preservative Permanence: Weathering Procedure 12 Stabilization of Treated Test Blocks and Place- 13 ment in Culture Bottles Incubation and Duration of Test 14 Handling Test Blocks After Exposure to Test 15 Fungi Calculation of Weight Losses 16 Evaluation of Test Results 17 Refining the Threshold 18 Report 19

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.