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.

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 following test methods do not have the required minimum number of members to initiate a ballot:

**SSIGs at risk of falling below the 10 members' mark:**

T 200 sp-15 Laboratory Beating of Pulp (Valley Beater Method)

T 203 cm-09 Alpha-, beta- and gamma-cellulose in pulp

T 205 sp-18 Forming Handsheets for Physical Tests of Pulp

T 207 cm-08 Water Solubility of Wood and Pulp

T 211 om-16 Ash in wood, pulp, paper and paperboard: combustion at 525 degrees C

T 212 om-18 One percent sodium hydroxide solubility of wood and pulp

T 213 om-15 Dirt in pulp - chart method

T 220 sp-16 Physical testing of pulp handsheets

T 221 cm-09 Drainage time of pulp

T 222 om-15 Acid insoluble lignin in wood and pulp

T 231 cm-07 Zero-span breaking strength of pulp (dry zero-span tensile)

T 232 cm-13 Fiber length of pulp by projection

T 233 cm-15 Fiber length of pulp by classification

T 234 cm-12 Coarseness of pulp fibers

T 235 cm-09 Alkali solubility of pulp at 25°C

T 237 cm-08 Carboxyl content of pulp

T 245 cm-07 Silicates and silica in pulp (wet ash method)

T 248 sp-15 Laboratory beating of pulp (PFI mill method)

T 249 cm-09 Carbohydrate composition of extractive-free wood and wood pulp by gas-liquid chromatography

T 252 om-16 pH and electrical conductivity of hot water extracts of pulp, paper, and paperboard

T 254 cm-10 Cupriethylenediamine disperse viscosity of pulp (falling ball method)

T 255 cm-07 Water-soluble sulfates in pulp and paper

T 256 cm-07 Water-soluble chlorides in pulp and paper

T 257 sp-14 Sampling and preparing wood for analysis

T 259 om-15 Species identification of nonwood plant fibers

T 261 cm-10 Fines fraction by weight of paper stock by wet screening

T 265 cm-09 Natural dirt in wood chips

T 266 om-18 Determination of sodium, calcium, copper, iron and manganese in pulp and paper by atomic absorption spectroscopy

T 268 om-13 Weight-volume measurement of pulpwood

T 272 sp-12 Forming handsheets for reflectance testing of pulp (sheet machine procedure)

T 274 sp-13 Laboratory screening of pulp (MasterScreen-type instrument)

T 275 sp-18 Screening of pulp (Somerville-type equipment)

T 277 sp-14 Macro stickies content in pulp: the “pick-up” method

T 278 sp-17 Pulp screening (Valley-type screening device)

T 281 sp-18 Open drum washer mat sampling technique

T 282 om-19 Hexeneuronic acid content of chemical pulp

T 406 om-13 Reducible sulfur in paper and paperboard

T 408 cm-07 Rosin in paper and paperboard

T 413 om-17 Ash in wood, pulp, paper and paperboard: combustion at 900 degrees C

T 419 om-18 Starch in paper

T 425 om-16 Opacity of paper (15/d geometry, illuminant A/2 degrees, 89% reflectance backing and paper backing)

T 428 om-13 Hot water extractable acidity or alkalinity of paper

T 438 cm-06 Zinc and cadmium in paper

T 444 om-12 Silver tarnishing by paper and paperboard

T 454 om-15 Turpentine test for voids in glassine and greaseproof papers

T 461 cm-09 Flame resistance of treated paper and paperboard

T 462 cm-16 Castor-oil penetration test for paper

T 465 sp-16 Static creasing of paper for water vapor transmission tests

T 480 om-15 Specular gloss of paper and paperboard at 75 degrees

T 483 cm-12 Odor of packaging materials

T 491 om-18 Water immersion number of paperboard

T 500 cm-07 Book bulk and bulking number of paper

T 504 cm-07 Glue in paper (qualitative & quantitative determination)

T 512 sp-12 Creasing of flexible packaging material paper specimens for testing

T 520 cm-07 Curl of gummed flat paper

T 524 om-13 Color of paper and paperboard (45/0, C/2)

T 525 om-17 Diffuse brightness of paper, paperboard and pulp (d/0) -- ultraviolet level C

T 534 om-15 Brightness of clay and other mineral pigments (d/0 diffuse)

T 537 om-16 Dirt count in paper and paperboard (optical character recognition - OCR)

T 544 cm-19 Aging of paper and board with moist heat

T 550 om-13 Determination of equilibrium moisture in pulp, paper and paperboard for chemical analysis

T 553 om-15 Alkalinity of paper as calcium carbonate (alkaline reserve of paper)

T 567 om-15 Determination of effective residual ink concentration (ERIC) by infrared reflectance measurement

T 568 om-18 Physical area of sub-visible contraries in pulp, paper and paperboard by image analysis

T 572 sp-13 Accelerated pollutant aging of printing and writing paper by pollution chamber exposure apparatus

T 573 sp-15 Accelerated temperature aging of printing and writing paper by dry oven exposure apparatus

T 602 cm-06 Analysis of sulfuric acid

T 611 cm-07 Analysis of bleaching powder, calcium hypochlorite bleach liquor and bleach sludge

T 646 om-11 Brightness of clay and other mineral pigments (45/0)

T 653 om-07 Specular gloss of paper and paperboard at 20 degrees

T 656 cm-07 Measuring, sampling, and analyzing white waters

T 657 sp-12 Sampling of fillers and pigments

T 684 om-15 Gross heating value of black liquor

T 702 om-14 Rheological measurements for characterization of polyolefins: low-density polyethylene (LDPE) for extrusion coating

T 800 cm-16 Drum test for fiberboard shipping containers (revolving hexagonal drum)

T 803 cm-10 Puncture test of container board

T 808 cm-15 Flat crush test of corrugated board (flexible beam method)

T 812 om-19 Ply separation of solid and corrugated fiberboard (wet)

T 815 om-18 Coefficient of static friction (slide angle) of packaging and packaging materials (including shipping sack papers, corrugated and solid fiberboard) (inclined plane method)

T 818 cm-18 Ring crush of paperboard (flexible beam method)

T 820 cm-09 Flexural stiffness of corrugated board

T 824 cm-14 Fluted edge crush of corrugating medium (flexible beam method)

T 827 om-17 Box blank dimensioning

T 829 om-15 Score quality test

T 830 om-18 Ink rub test of containerboard and corrugated board

T 831 om-14 Water absorption of corrugating medium: water drop penetration test

T 832 om-17 Water absorption of corrugating medium: float curl method

T 834 om-18 Determination of containerboard roll hardness

T 836 om-13 Bending stiffness, four point method

T 838 cm-12 Edge crush test using neckdown

T 843 om-20 Fluted edge crush of corrugating medium (rigid support method)

T 1014 om-15 Moisture sensitivity of fiber glass mats

T 1212 sp-12 Light sources for evaluating papers including those containing fluorescent whitening agents

T 1215 sp-12 The determination of instrumental color differences

**SSIGs that need 1 member:**

T 204 cm-17 Solvent Extractives of Wood and Pulp

T 218 sp-18 Forming handsheets for reflectance testing of pulp (Büchner funnel procedure)

T 262 sp-18 Preparation of mechanical pulps for testing

T 515 om-20 Visual grading and color matching of paper

T 516 cm-11 Envelope seal, seam, and window patch testing

T 519 om-17 Diffuse opacity of paper (d/0 paper backing)

T 578 sp-16 Accelerated light aging of printing and writing paper by xenon-arc exposure apparatus

T 579 om-18 Diffuse brightness of paper, paperboard and pulp (d/0) (ultraviolet level D65)

T 617 cm-10 Analysis of lime

T 835 om-14 Water absorption of corrugating medium: water drop absorption test

T 1214 sp-17 Interrelation of reflectance, R0; reflectivity, R ; TAPPI opacity, C0.89; scattering, s; and absorption, k

T 1217 sp-18 Photometric linearity of optical properties instruments

T 1218 sp-18 Calibration of reflectance standards for hemispherical geometry

T 1219 sp-17 Storage of paper samples for optical measurements and color matching

T 1500 gl-18 Optical measurements terminology (related to appearance evaluation of paper)

**SSIGs that need 2 members:**

T 210 cm-13 Sampling and testing wood pulp shipments for moisture

T 264 cm-07 Preparation of wood for chemical analysis

T 271 om-18 Fiber length of pulp and paper by automated optical analyzer using polarized light

T 421 om-12 Qualitative (including optical microscopic) analysis of mineral filler and mineral coating of paper

T 509 om-15 Hydrogen ion concentration (pH) of paper extracts (cold extraction method)

T 600 om-15 Analysis of formaldehyde in aqueous solutions and of free formaldehyde in resins

T 604 cm-09 Sulfur dioxide in sulfite cooking liquor

T 619 cm-10 Analysis of salt cake

T 625 cm-14 Analysis of soda and sulfate black liquor

T 692 om-13 Determination of suspended solids in kraft green and white liquors

T 1216 sp-18 Indices for whiteness, yellowness, brightness, and luminous reflectance factor

**SSIGs that need 3 members:**

T 263 sp-16 Identification of wood and fibers from conifers

T 267 cm-15 Compression wood identification in pulpwood

T 418 cm-17 Organic nitrogen in paper and paperboard

T 495 cm-13 Bending number of paperboard

T 610 sp-15 Preparation of indicators and standard solutions

T 622 cm-10 Analysis of sodium hydrosulfite lime

T 624 cm-11 Analysis of soda and sulfate white and green liquors

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

T 223 cm-10 Pentosans in wood and pulp

T 226 cm-11 Specific external surface of pulp

T 244 cm-11 Acid-insoluble ash in wood, pulp, paper, and paperboard

T 429 cm-10 Alpha-cellulose in paper

T 434 cm-10 Acid-soluble iron in paper

T 435 om-16 Hydrogen ion concentration (pH) of paper extracts (hot extraction method)

T 493 cm-10 Identification and determination of melamine resin in paper

T 613 cm-10 Analysis of caustic soda

T 618 cm-10 Analysis of limestone

T 621 cm-10 Analysis of rosin

T 628 cm-10 Analysis of rosin size

T 632 cm-11 Analysis of sodium silicate

Participating in a SSIG is *free* and open to anyone 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 have an interest in becoming a member of either of these SSIGs please contact standards@tappi.org.