GOST 3816-81 PDF

Full title and description

GOST 3816-81 — "Полотна текстильные. Методы определения гигроскопических и водоотталкивающих свойств" (English: "Textile fabrics. Methods for the determination of hygroscopic and water‑repellent properties"). The standard specifies laboratory methods for sampling and testing woven, knitted and non‑woven textile fabrics and related small textile articles to determine moisture content, hygroscopicity (moisture regain and moisture release), capillarity, water‑resistance and water absorption, and includes required test reports and annexed test procedures.

Abstract

This standard defines standardized test procedures used to measure key moisture‑related and water‑repellent properties of textile fabrics, including methods for sampling, conditioning, determination of moisture content and hygroscopicity, measurement of water uptake and capillary rise, and assessment of water‑resistance (including reference to hydrostatic pressure testing). It integrates several later amendments and is aligned with ISO 811 in its approach to water‑penetration testing.

General information

• Status: In force with amendments; partly replaced/integrated with later documents for specific test methods (some methods have been superseded in part by other national standards).
• Publication date: Approved 28 July 1981; introduced into effect 1 July 1982 (designation year 1981 — hence the "-81" suffix).
• Publisher: Gosstandart / USSR State Committee for Standards; published by the Publishing House of Standards (Издательство стандартов).
• ICS / categories: Textiles — OKC/ICS classification for textile products (listed in catalogues under textile products; commonly cataloged with OKS 59.080.30 / textile products).
• Edition / version: GOST 3816-81 (original 1981 edition) with Amendments No.1–4 integrated (amendments published 1984–1994). Sometimes referenced as (ISO 811-81) where aligned with ISO method.
• Number of pages: Catalog listings record approximately 29 pages in the full integrated edition (various reprints/editions may show shorter extracts).

Scope

Applies to woven, knitted and non‑woven textile fabrics, textile haberdashery and small articles made from fibres and yarns of all kinds. Establishes methods to determine moisture content and hygroscopic properties (moisture regain and moisture release), capillarity, water uptake and water‑resistance (including hydrostatic pressure methods referenced to ISO 811). The standard generally does not apply to fabrics with continuous film coatings (with some exceptions) or certain special glass‑fibre fabrics.

Key topics and requirements

• Sampling procedures and specimen preparation (conditioning and atmosphere control prior to testing).
• Determination of moisture content and calculation of moisture regain/hygroscopicity.
• Methods for measuring moisture release (drying behaviour) and related reporting.
• Capillarity (wicking) test procedures for assessing liquid transport along the fabric.
• Water‑resistance / water‑repellency measurements, including hydrostatic head (reference to ISO 811) and water penetration tests.
• Determination of water absorption and protocols for recording test results and test reports (including mandatory and informative annexes).
• Requirements for test equipment calibration, environmental conditions and repeatability of measurements.

Typical use and users

Used by textile manufacturers, quality control and research laboratories, test houses, certification and conformity assessment bodies, and regulatory authorities concerned with textile product performance and consumer safety. It is commonly referenced when verifying moisture and water‑repellent performance for garments, technical textiles and household textiles.

Related standards

Closely related to ISO 811 (hydrostatic pressure water‑penetration testing) and historically replaces or updates earlier national documents (replaces ГОСТ 3816-61). Certain methods (for example capillarity) were later addressed or superseded in part by more recent national standards such as ГОСТ 29104.11-91 and regional/adopted versions (e.g., DSTU/GOST republic adaptations). The standard also cross‑references various other GOST/NТД for conditioning, sampling and related test procedures.

Keywords

Textile fabrics; hygroscopicity; moisture regain; moisture content; capillarity; wicking; water‑resistance; water repellency; hydrostatic head; sampling; test methods; GOST; ISO 811.

FAQ

Q: What is this standard?

A: GOST 3816-81 is a USSR/Russian standard that defines laboratory methods to determine hygroscopic (moisture‑related) and water‑repellent properties of textile fabrics.

Q: What does it cover?

A: It covers sampling, specimen conditioning, determination of moisture content and hygroscopicity (moisture regain and release), capillarity/wicking, water absorption and water‑resistance tests (including hydrostatic pressure methods aligned with ISO 811). Annexes include test report forms and explanatory notes.

Q: Who typically uses it?

A: Textile producers, laboratory testers, conformity assessment bodies, purchasing/quality engineers and regulators who need standardized test methods to assess moisture handling and water‑repellent behaviour of fabrics.

Q: Is it current or superseded?

A: The 1981 edition (introduced 1 July 1982) has had amendments integrated (amendments issued between 1984 and 1994). Catalogues and normative databases list it as maintained/in force for general methods, though some specific test methods have been replaced or supplemented by later national standards (for example certain capillarity methods). Users should check the latest national/regional normative lists for current applicability in their jurisdiction.

Q: Is it part of a series?

A: It is part of the body of textile testing standards and is linked to related GOST/ISO documents (it superseded earlier national versions such as ГОСТ 3816‑61 and is associated with ISO 811 for hydrostatic water‑penetration testing). Some countries/regions have later adopted or adapted the same methods under local GOST/DSTU numbering.

Q: What are the key keywords?

A: Hygroscopicity, moisture content, moisture regain, wicking/capillarity, water absorption, water‑resistance, hydrostatic head, textile testing, ISO 811, GOST 3816-81.