EN ISO 105-P01:1995 PDF

Overview

EN ISO 105‑P01:1995 (identical to ISO 105‑P01:1993) specifies a standardized method for determining colour fastness to dry heat (excluding pressing) for textiles. The method evaluates how textile colours resist exposure to dry heat used to stabilise fabric size and form. It provides three temperature-level tests and a reproducible procedure for sample mounting, heating, conditioning and assessment.

Key topics and technical requirements

• Scope: Applies to textiles of all kinds and forms; not intended for assessing colour change during crease‑resist or dyeing processes.
• Test temperatures: Three preset temperatures are specified - 150 °C, 180 °C and 210 °C (±2 °C). Other temperatures may be used if reported.
• Heating device and pressure: A close‑contact heating device with two electrically heated plates or equivalent (e.g., molten metal bath holder) is used. The composite specimen is held flat under a pressure of 4 kPa ± 1 kPa.
• Exposure time: Composite specimens are heated for 30 seconds at the selected temperature.
• Specimen construction: Test specimens are placed in contact with specified adjacent fabrics: either a multifibre adjacent fabric or two single‑fibre adjacent fabrics (one matching the tested fibre, the other polyester). Sewing methods and sizes are defined to ensure reproducibility. A non‑dyeable fabric can be included if required.
• Conditioning and assessment: After heating, specimens are left for 4 hours in the standard atmosphere (ISO 139) - normally 20 °C ± 2 °C and 65 % ± 2 % RH (tropical alternative: 27 °C ± 2 °C). Colour change and staining are evaluated using the grey scales (ISO 105‑A02 for change, ISO 105‑A03 for staining).
• Test report requirements: Report must include identification details, test temperature, numerical ratings for colour change and staining, type of adjacent fabrics and other pertinent information.

Applications and users

• Textile manufacturers and converters verifying heat stability of dyes and finishes.
• Quality control and testing laboratories performing standardised colour fastness evaluations.
• Dye houses and chemical suppliers assessing heat tolerance of dyes and pigments.
• Product development teams and specifiers ensuring materials meet customer or regulatory colourfastness requirements.
• Buyers and procurement professionals specifying performance criteria for textiles exposed to dry heat processes.

Related standards

• ISO 105‑A01 / A02 / A03 - General principles and grey scales for assessment
• ISO 105‑F and ISO 105‑F10 - Adjacent fabrics (multifibre and single‑fibre specifications)
• ISO 139 - Standard atmospheres for conditioning and testing

Keywords: colour fastness to dry heat, EN ISO 105‑P01, textile testing, colour fastness testing, grey scale assessment, multifibre adjacent fabric, heating press, ISO 105.