Standards up for review in 2026

T 204 Solvent extractives of wood and pulp

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

T 212 One percent sodium hydroxide solubility of wood and pulp

T 236 Kappa number of pulp

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

T 262 Preparation of mechanical pulps for testing

T 268 Weight-volume measurement of pulpwood

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

T 281 Open drum washer mat sampling technique

T 400 Sampling and accepting a single lot of paper, paperboard, containerboard, or related product

T 403 Bursting strength of paper

T 412 Moisture in pulp, paper, and paperboard

T 413 Ash in wood, pulp, paper and paperboard: combustion at 900°C

T 418 Organic nitrogen in paper and paperboard

T 419 Organic nitrogen in paper and paperboard

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

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

T 449 Bacteriological examination of paper and paperboard

T 456 Tensile breaking strength of water-saturated paper and paperboard (“wet tensile strength”)

T 464 Water vapor transmission rate of paper and paperboard at high temperature and humidity

T 489 Bending resistance (stiffness) of paper and paperboard (Taber-type tester in basic configuration)

T 494 Tensile properties of paper and paperboard (using constant rate of elongation apparatus)

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

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

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

T 526 Blister resistance of coated paper in heatset printing

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

T 536 Resistance of paper to passage of air (high-pressure Gurley method)

T 538 Roughness of paper and paperboard (Sheffield method)

T 543 Bending resistance of paper (Gurley-type tester)

T 546 Machine-direction grammage variation measurement (gravimetric method)

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

T 555 Roughness of paper and paperboard (print-surf method)

T 569 Internal bond strength (Scott type)

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

T 581 Dry tensile properties of paper towel and tissue products (using constant rate of elongation apparatus)

T 582 High Shear Capillary Viscosity (ACA Capillary Viscosity) of coating color on paper and paperboard

T 600 Analysis of formaldehyde in aqueous solutions and of free formaldehyde in resins

T 610 Preparation of indicators and standard solutions

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

T 648 Viscosity of coating clay slurry

T 653 Specular gloss of paper and paperboard at 20 degrees

T 684 Gross heating value of black liquor

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

T 802 Drop test for fiberboard shipping containers

T 809 Flat crush of corrugating medium (CMT test)

T 810 Bursting strength of corrugated board

T 821 Pin adhesion of corrugated board by selective separation

T 822 Ring crush of paperboard (rigid support method)

T 832 Water absorption of corrugating medium: float curl method

T 835 Water absorption of corrugating medium: water drop absorption test

T 1006 Testing of fiber glass mats: use of modified TAPPI procedures for sampling and lot acceptance, stiffness, tear resistance, and thickness

T 1007 Sample location for fiber glass mat sheets

T 1009 Tensile strength and elongation at break for fiber glass mats

T 1013 Tensile strength and elongation at break for fiber glass mats

T 1016 Average fiber diameter of fiber glass mats

T 1210 Units of measurement and conversion factors

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

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

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

Producers of Pulp & Paper or Nonwovens

Converters of Pulp & Paper or Nonwovens/ nonwoven Mat

Suppliers of chemical or raw materials

Suppliers of manufacturing equipment, instrumentation and online controls

Service and general suppliers

Commercial users of Pulp & Paper or Nonwoven Mat

Marketers and Commercial Sellers

Consultants

Educators

General Interest: SSIG members who are not covered under any of the above categories