ASTM D2118-18 PDF

Full title and description

Standard Practice for Assigning a Standard Commercial Moisture Content for Wool and its Products — a short ASTM practice that recommends a single, uniform commercial moisture content value to be used in ASTM specifications and commercial transactions involving wool in various forms, intended to reduce confusion and calculation errors when converting between forms of wool (scoured, yarn, fabric, etc.).

Abstract

This practice establishes the rationale and scope for adopting a single commercial moisture-content value for wool and wool products to promote uniformity across specifications and trade. It explains significance and use, references related test methods and tables for calculating moisture-free fiber content, and lists the forms of wool covered and specific exclusions. The practice is concise (two pages) and intended as a normative reference for other ASTM textile/wool standards.

General information

• Status: Published / Active.
• Publication date: 30 June 2018 (designation D2118-18).
• Publisher: ASTM International.
• ICS / categories: 59.060.10 (Natural fibres); Technical committee D13 (Textiles), drafting subcommittee D13.13 (Wool and Felt).
• Edition / version: D2118-18 (2018).
• Number of pages: 2 pages.

Record and bibliographic details from the ASTM catalog and standard records.

Scope

The practice recommends adopting a single commercial moisture content value for wool in the following forms: scoured; carbonized and neutralized; noils (uncarbonized); top (oiled or dry combed); yarn (worsted); yarn (woolen); yarn for hand knitting; and fabric. It also specifies limitations—grease wool, pulled wool, and wool with pH below 5.0 are excluded. The standard does not replace specific test methods for measuring moisture but provides the commercial reference value to be used in related specifications.

Key topics and requirements

• Recommendation to adopt a single standardized commercial moisture-content value for wool and wool products to ensure consistency across trade and specifications.
• List of covered wool forms (scoured, carbonized/neutralized, noils, top, worsted/woolen yarns, hand-knitting yarns, fabric).
• Explicit exclusions and limitations (grease wool, pulled wool, wool with pH < 5.0).
• References to related ASTM test methods and tables (for example, Test Method D584, Practice D2720, and Terminology D4845/D123) for measurement/terminology and commercial-weight calculations.
• Guidance on using the recommended commercial moisture value when changing product form to avoid errors in calculating moisture-free fiber content.

Key clauses and normative references are summarized from the published practice.

Typical use and users

Manufacturers, traders, quality laboratories, standards writers, purchasing/specification engineers, and customs/inspection bodies in the textile and wool trade use this practice to harmonize commercial moisture assumptions when specifying, pricing, testing, or converting between forms of wool. It is also used as a normative reference in other ASTM textile standards and by laboratories performing moisture-related calculations for wool shipments.

Related standards

The practice refers to and is used alongside ASTM documents such as Test Method D584 (Wool content of raw wool—laboratory scale), Practice D2720 (calculation of commercial weight and yield), Terminology D4845/D123, and the Standard Table of Commercial Moisture Regains (D1909). It is also cited by subsequent moisture-related test methods and standards in the D13 textile series.

Keywords

wool; commercial moisture content; moisture regain; textile standards; ASTM D2118; moisture allowance; D13; natural fibres; wool products; moisture calculation.

FAQ

Q: What is this standard?

A: ASTM D2118-18 is a short ASTM Practice titled "Standard Practice for Assigning a Standard Commercial Moisture Content for Wool and its Products" that recommends a single commercial moisture-content value to be used in specifications and commercial calculations for wool.

Q: What does it cover?

A: It covers the recommendation to adopt one standard commercial moisture content for wool in specific commercial forms (scoured, carbonized/neutralized, noils, top, worsted and woolen yarns, hand-knitting yarns, and fabric), specifies exclusions (grease wool, pulled wool, pH < 5.0), and points to related test methods and tables for measuring and converting moisture and commercial weight.

Q: Who typically uses it?

A: Textile manufacturers, wool merchants, testing laboratories, standards committees, and specification writers use the practice to harmonize commercial moisture assumptions and avoid calculation discrepancies when converting product forms or establishing commercial weight.

Q: Is it current or superseded?

A: As published (designation D2118-18, 2018) the practice is recorded as published/active in the ASTM catalog. Users should check the ASTM catalog or store record for the very latest status before formal citation or procurement.

Q: Is it part of a series?

A: The practice is part of the ASTM D13 committee work on textiles and wool (subcommittee D13.13 Wool and Felt) and is intended to be used in conjunction with other D13 standards and test methods (for example D1909, D584, D2720, D4845, D123).

Q: What are the key keywords?

A: Wool, commercial moisture content, moisture regain, textile standards, D2118, D13, natural fibres, moisture allowance, wool products.