EN 12127:1997

Overview

EN 12127:1997 (CEN) specifies methods for the determination of the mass per unit area of textile fabrics using small samples. The standard covers testing in the standard atmosphere for testing and by oven-dry procedures. It is applicable primarily to woven and knitted fabrics and may be used for fabrics produced by other techniques. Typical results are reported as mass per unit area (grammage, g/m²).

Key topics and requirements

• Scope and applicability: Methods suitable for woven and knitted textiles; possible use for other fabric types.
• Conditioning: Procedures for testing in a defined standard atmosphere to ensure comparable results across laboratories.
• Oven-dry method: Alternative procedure to determine dry mass when required.
• Small-sample handling: Guidance on sampling small specimens and preparation to avoid bias from selvedges, seams or non-representative areas.
• Weighing and measurement: Use of appropriately calibrated balances and procedures to minimize error when determining sample mass.
• Calculation and reporting: Determination and expression of mass per unit area (commonly in g/m²), including how to account for sample size in the calculation.
• Precision and reproducibility: Emphasis on repeatable technique and environmental control to ensure reliable inter-laboratory comparisons.
• Documentation: Requirements for recording test conditions, method used (standard atmosphere or oven-dry), sample identification and results.

Applications

EN 12127 is used widely in textile testing, quality control and product specification:

• Manufacturers use it to verify fabric consistency and to control production processes.
• Laboratories (QA/QC and third-party testing) apply the methods to generate certified test reports.
• Product designers and R&D teams rely on accurate mass per unit area data for material selection and performance modeling.
• Procurement and specification writers include mass-per-area values in product specifications, tender documents and compliance requirements.
• Regulators and certification bodies use standardized results for labeling, classification and conformity assessment.

Related standards

• Standards dealing with textile conditioning, thickness, tensile strength, and dimensional change are commonly used alongside EN 12127 to provide a full characterization of fabric properties.
• EN 12127 is part of a suite of CEN textile test methods and is frequently referenced in product specifications and testing protocols.

Keywords: EN 12127, mass per unit area, grammage, textiles, fabrics, small samples, standard atmosphere, oven-dry, woven, knitted, CEN.