A revision has been proposed for T 257 om-12 "Sampling and preparing wood for analysis." The current method specifies a 40 mesh (0.40 mm) screen, but contains no definition of what type or screen is specified. A "40-mesh" screen may mean different sizes in different systems.
The proposed revision is to describe the screen more clearly by referring to an ASTM standard.
If you are not already a member of the Standard-Specific Interest Group (SSIG) for T 257, you may join in order to receive the ballot for this revision. Please contact standards@tappi.org before September 30, 2013, to be placed on the SSIG before the ballot is distributed.