ISO 105: testing scope and instrument selection

Conclusion The instruments described are designed to meet the requirements of ISO 105, which outlines methods for testing the fastness of colors in textiles.

Instrument Specifications and Their Role in ISO 105 Testing The Scorch Tester (Sublimation Fastness Tester), model number TNG1025, is specifically designed for sublimation fastness testing. It includes standard accessories such as insulation cotton, which is essential for maintaining the required temperature conditions during testing. The optional heat-insulating asbestos sheet further ensures that the test environment remains stable. The instrument also uses a DW multi-fiber cloth, specifically AATCC NO.10A, which is a standard reference material for color fastness testing. The dimensions of the instrument, with a length of 460 mm and a width of 310 mm, are designed to accommodate standard test samples while ensuring proper placement and exposure to heat. The WashTrue Washing Fastness Tester, model number TNG1027, is used to evaluate the washing fastness of textiles. It features a temperature setting range from normal temperature (>0°C) up to 95°C, which aligns with the temperature requirements specified in ISO 105. The heating rate of 1.5±0.5℃/min ensures a consistent and controlled temperature increase, which is critical for accurate results. The temperature accuracy of ± 2°C helps ensure that the test conditions remain within the acceptable range. 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 are carefully calibrated to simulate the mechanical action of washing, ensuring that the test results are representative of real-world conditions.

Additional Instruments and Their Specifications The Crockmeter, model number TNG1029, is used for rubbing fastness testing. It is a Electronic Crockmeter, which provides precise and repeatable results. The rubbing head has a diameter of 16 mm, which is standard for this type of test. The vertical pressure of 9N±10% ensures that the test applies the correct amount of force to the fabric, simulating the rubbing action that occurs during use. The rubbing stroke of 104 mm is designed to mimic the movement of the rubbing action, while the counter, which can count up to 999,999 times and automatically stop, ensures that the test can be repeated accurately. The net weight of 11 kg is suitable for laboratory environments where stability and durability are important. The Perspiration Tester / Perspirometer, model number TNG1034, is used to assess the fastness of textiles to perspiration. It has a weight of 7 kg, which is appropriate for its intended use. The dimensions of 190 mm in length are designed to fit standard test samples. The instrument is capable of testing perspiration according to AATCC 15, water according to AATCC 107, and sea water according to AATCC 106, which are all relevant to the ISO 105 standard. These specifications ensure that the tester can accurately simulate the conditions of perspiration and other environmental factors that may affect color fastness.