American Society for Testing and Materials (ASTM). Current edition approved May 15, 2005. Published June 2005. Originally approved in 1970. Last previous edition approved in 1998 as D 2921 – 98. 2 p. This test method covers simple qualitative field or laboratory tests to determine water repellency or the presence of chlorinated phenol2 preservative chemicals in wood products that are specified to be water repellent preservative treated.