We collected information about Light Fastness Hours for you. Follow the liks to find out everything about Light Fastness Hours.
https://revolutionfabrics.com/blogs/gotcha-covered/what-is-lightfastness#:~:text=Lightfastness%20is%20best%20described%20as%20the%20amount%20of,fading.%20The%20typical%20lightfastness%20year%20is%20500%20hours.
https://revolutionfabrics.com/blogs/gotcha-covered/what-is-lightfastness
The lightfastness hours rating is usually a measure of color fading for most indoor/ outdoor upholstery fabric. It might say 500,1000, 2000, or 3000+ lightfastness hours. The industry standard for indoor upholstery fabric is 40 hours of lightfastness.
https://www.testextextile.com/common-questions-during-light-fastness-test-iso-105-b02-and-aatcc-16/
When the lamp is only operated at 1.10 W/(m 2 ·nm), the energy can achieve 20 AFU in 21.5 hours. 2.5 Why is it wrong to say that “The xenon arc lamp used in the light fastness tester can continue to be used as long as it glows normally”?
https://www.gester-instruments.com/standard-test-method-for-fastness-to-sunlight-of-fabrics_n168
According to international standards, the light fastness is divided into 8 grades, the lowest grade 1 is equivalent to fading after exposure to sunlight for 3 hours; the highest grade 8 is equivalent to fading at 384 h after exposure to sunlight. The evaluation method is based on …
https://contracttextiles.org/wp-content/uploads/2016/12/act_colorfastness_080714_2.pdf
AATCC 16 Option 1 or 3 Grade 4 minimum at 40 hours* Wrapped Panels and Upholstered Walls AATCC 16 Option 1 or 3 Grade 4 minimum at 40 hours* Drapery AATCC 16 Option 1 or 3 Grade 4 minimum at 60 hours* *Note: There is no direct correlation between the numbers of testing hours and hours of service in the field. Colorfastness to Light August 2014 Page 1
https://www.testextextile.com/color-fastness-the-ultimate-guide/
Lightfastness refers to the degree of discoloration of colored fabrics when exposed to sunlight. The Color Fastness to light test is done by comparing the degree of fade of the sample after simulating sunlight with a standard color sample divided into eight grades; 8, as the resulting value, implies the best while 1 implies the worst lightfastness.
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