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Standardized testing for colour fastness and other parameters was established in the 20th century by industrialized economies such as the US, the UK, Japan, and Europe. The American Association of Textile Chemists and Colorists (AATCC), International Organization for Standardization (ISO) and Society of Dyers and Colourists played vital roles ...
A rating between 0 and 8 is awarded by identifying which one of the eight strips on the bluewool standard card has faded to the same extent as the sample under test. [4] [5] Zero denotes extremely poor colour fastness whilst a rating of eight is deemed not to have altered from the original and thus credited as being lightfast and permanent.
For example, if the lightfastness of the colourant is indicated to be 5 on the Blue Wool scale, it can be expected to fade by a similar amount as the strip number 5 in the Blue Wool test strip set. The success of the test can be confirmed by comparing the test strip set with the reference set that was stored protected from the light. [12] [13]
AATCC published its first four color fastness test methods in 1923. 1964. AATCC built and moved into the Technical Center in Research Triangle Park, North Carolina in 1964. 1965. AATCC began conducting test method training programs in 1965. Durable press testing was the most popular training initially offered at the Technical Center. 1966
Microfadeometry is a technique that uses tiny spots of intense light to probe and measure color changes in objects of art that are particularly sensitive to light exposure. [1] This process is completed using a recently designed instrument known as a microfading tester. The data from the test is represented by reflectance spectra.
Textile testing is the process of measuring the properties and performance of textile materials—textile testing includes physical and chemical testing of raw materials to finished products. Textile testing assists textile production in selecting various types of fibers and their transformation into yarn , fabric, and finished goods such as ...
Colorimetry is "the science and technology used to quantify and describe physically the human color perception". [1] It is similar to spectrophotometry, but is distinguished by its interest in reducing spectra to the physical correlates of color perception, most often the CIE 1931 XYZ color space tristimulus values and related quantities.
In Holmgren's wool test, the patient is asked to match coloured skeins of yarn to the samples in the box. [6] [7] At first, the patient is asked to select from the 40 skeins, 10 skeins that best match the light green master A. [2] From the remaining 30 skeins, the patient is then asked to select the 5 skeins that best match the red master C. [2] Lastly, the patient is asked to select 5 skeins ...