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 222 Acid-Insoluble Lignin in Wood and Pulp

T 244 Acid-Insoluble Ash in Wood, Pulp, Paper, and Paperboard

T 248 Laboratory Beating of Pulp (PFI Mill Method)

T 252 pH and electrical conductivity of hot water extracts of pulp, paper, and paperboard

T 255 Water-Soluble Sulfates in Pulp and Paper

T 256 Water-Soluble Chlorides in Pulp and Paper

T 263 Identification of Wood Fibers from Conifers

T 265 Natural Dirt in Wood Chips

T 406 Reducible Sulfur in Paper and Paperboard

T 430 Copper Number of Pulp, Paper, and Paperboard

T 438 Zinc and cadmium in paper

T 504 Glue in Paper (Qualitative and Quantitative Determination)

T 602 Analysis of Sulfuric Acid

T 646 Brightness of Clay and Other Mineral Pigments (45/0)

**SSIGs that need 2 members:**

T 223 Pentosans in Wood and Pulp

T 226 Specific External Surface of Pulp

T 237 Carboxyl Content of Pulp

T 267 Compression Wood Identification in Pulpwood

T 268 Weight-Volume Measurement of Pulpwood

T 418 Organic Nitrogen in Paper and Paperboard

T 429 Alpha-Cellulose in Paper

T 435 Hydrogen Ion Concentration (pH) of Paper Extracts (Hot Extraction Method)

T 509 Hydrogen Ion Concentration (pH) of Paper Extracts (Cold Extraction Method)

T 610 Preparation of Indicators and Standard Solutions

T 611 Analysis of Bleaching Powder, Calcium Hypochlorite Bleach Liquor and Bleach Sludge

T 617 Analysis of Lime

T 619 Analysis of salt cake

T 624 Analysis of Soda and Sulfate White and Green Liquors

T 625 Analysis of Soda and Sulfate Black Liquor

T 699 Analysis of Pulping Liquors by Suppressed Ion Chromatography

**SSIGs that need 3 members:**

T 421 Qualitative (including optical microscopic) analysis of mineral filler and mineral coating of paper

T 495 Bending number of paperboard

T 600 Analysis of Formaldehyde in Aqueous Solutions and of Free Formaldehyde in Resins

T 613 Analysis of caustic soda

T 618 Analysis of Limestone

T 622 Analysis of sodium hydrosulfite

T 632 Analysis of sodium silicate

**SSIGs that need 4 or more members:**

T 434 Acid-soluble iron in paper (4 members needed)

T 493 Identification and determination of melamine resin in paper (5 members needed)

T 621 Analysis of rosin (4 members needed)

T 628 Analysis of rosin size (4 members needed)

Participating in a SSIG is free and open to any industry expert interested. Join now!

If no progress is made on balancing these SSIGs, then the respective methods may be considered for withdrawal at the next Q&SMC meeting. If you are interested in becoming a member of either of these SSIGs please contact standards@tappi.org