All Standard-Specific Interest Groups (SSIG) require a minimum of 10 members in order to ballot and vote on a draft of a method. The Standard-Specific Interest Groups (SSIGs) for the following Standards are in need of additional members. These groups may or may not have ballots currently open.

T 203 cm-09 Alpha-, beta- and gamma-cellulose in pulp (1 member needed)

T 604 cm-09 Sulfur dioxide in sulfite cooking liquor (3-4 SSIG members needed)