ISO 105: which instrument fits and how to decide

When selecting an instrument for testing in accordance with ISO 105, it is essential to match the device's specifications with the standard's requirements to ensure accurate and reliable results.

Matching Instrument Specifications to ISO 105 Standards

ISO 105 is a family of standards that outlines methods for testing the colour fastness of textiles. These tests are critical for determining how well a fabric retains its color under various conditions such as washing, perspiration, and light exposure. For compliance testing, the selected instrument must meet specific criteria that align with the standard's methodology.

The Crockmeter (TNG1029) is a key instrument for assessing colour fastness to rubbing. Its specifications, such as the 16 mm rubbing head and 9N ±10% vertical pressure, are directly aligned with the ISO 105 standard's requirement for controlled mechanical rubbing. The 104 mm rubbing stroke ensures that the test simulates real-world conditions accurately, while the 1 ~ 999,999 times counter allows for precise measurement of rubbing cycles. These features collectively support the standard's focus on consistent and repeatable results.

Selecting the Right Instrument for Washing Fastness Testing

For washing fastness testing, the WashTrue Washing Fastness Tester (TNG1027) is the appropriate choice. This instrument's temperature setting range of 0°C to 95°C and heating rate of 1.5 ±0.5°C/min ensure that the test conditions closely replicate real washing scenarios. The temperature accuracy of ±2°C helps ensure that the test environment remains stable, which is crucial for obtaining reliable results. The rotation speed of 40 ±2 r/min and the distance from the bottom of the cup to the rotary axis of 45 ±10 mm also align with the standard's specifications, ensuring that the mechanical action during washing is consistent and controlled.

Ensuring Accuracy with Sublimation and Perspiration Testing

The Scorch Tester (Sublimation Fastness Tester) (TNG1025) and the Perspiration Tester / Perspirometer (TNG1034) are essential for testing sublimation and perspiration fastness, respectively. The Scorch Tester uses AATCC NO.10A multi-fiber cloth and insulation cotton to simulate the conditions under which sublimation occurs. The Perspiration Tester adheres to AATCC 15, AATCC 107, and AATCC 106 standards for perspiration, water, and sea water testing, ensuring that the instrument meets the necessary criteria for these specific tests. These specifications are crucial for accurately evaluating how textiles withstand exposure to perspiration and moisture.

Conclusion

Selecting the correct instrument for ISO 105 testing requires careful attention to specifications that directly relate to the standard's methodology. By matching the Crockmeter (TNG1029), WashTrue Washing Fastness Tester (TNG1027), Scorch Tester (TNG1025), and Perspiration Tester / Perspirometer (TNG1034) to the required parameters, laboratories can ensure that their testing processes are both accurate and compliant with international standards.

Instrument models referenced

• TNG1029 Crockmeter (Colour Fastness Testing). Published specifications include Type of Crockmeter Electronic Crockmeter; Rubbing head 16 mm; Vertical pressure 9N+/-10%.
• TNG1027 WashTrue Washing Fastness Tester (Colour Fastness Testing). Published specifications include Temperature setting range Normal temperature (>0°C)~ 95°C; Heating Rate 1.5±0.5℃/min; Temperature Accuracy ± 2°C.
• TNG1025 Scorch Tester (Sublimation Fastness Tester) (Colour Fastness Testing). Published specifications include Standard Accessories: Insulation cotton; Optional Accessories: Heat-insulating asbestos sheet; DW multi-fiber cloth AATCC NO.10A multi-fiber cloth.
• TNG1034 Perspiration Tester / Perspirometer (Colour Fastness Testing). Published specifications include Length: 190 mm; Perspiration: AATCC 15.