ISO

ISO 7211-2 Textiles — Woven fabrics — Construction — Methods of analysis — Part 2: Determination of number of threads per unit length

Counting ends and picks per unit length — the construction figure that sits beside GSM on every woven fabric specification.

Number

ISO 7211-2

Committee

ISO/TC 38

Status

active

Equivalents

Body	Number	Equivalence	Deviation
ASTM	ASTM D3775	NEQ	Parallel standard, not an adoption of the ISO text under ISO/IEC Guide 21. Measures the same property by a comparable method; results should not be assumed interchangeable. Confirm which standard the buyer specifies.
CEN	EN ISO 7211-2	IDT	CEN adopts the standard unchanged under this designation, which is the name it is cited by across the European Union. Recorded so that a specification written in European terms reaches the document this register already holds.

Verification coverage

Checked against ASTM. Not yet checked: AATCC, BIS, SAC, JIS, EN, DIN — an absent row here does not mean no equivalent exists.

What this standard is for

Where it is used

Woven fabric specifications, incoming inspection, and verifying that a delivered fabric is the construction that was quoted.

Why it matters

Thread count is where a fabric is most easily and least visibly cheapened. A few picks short across a large order is a real saving to the mill and a fabric that does not perform as specified for the buyer.

What to watch for

Count in the relaxed, conditioned state and away from selvedges. Fabric under tension on a roll reads differently from the same fabric lying flat.

Calculators that implement this

• Courses & Wales per Inch Calculator
• Knitted Fabric GSM Predictor
• Loom Production & Efficiency Calculator
• Shed Geometry, Warp Strain & Abrasion Exposure
• Shirley Fabric Cover Factor Calculator
• Size Pick-up Percentage Calculator
• Woven Construction Feasibility Checker

Buy the official copy from ISO

Metadata only — purchase the standard from the issuing body.