The Blue Wool Scale measures and calibrates the permanence of colouring dyes. Traditionally this test was developed for the textiles industry but it has now been adopted by the printing industry as measure of lightfastness of ink colourants.

Feb 5, 2025 · The wool makes it warm and machine washable and the cotton makes it soft. Sweater is currently our only machine washable yarn, making it unique and the perfect yarn for the family. This yarn is great for kid projects, accessories, garments, and home decor items.

Blue Wools are used for light fastness and weathering testing, to measure and calibrate the permanence of coloured materials, and have been used for many years to indicate the end of test exposure and for grading purposes.

Blue wool textile fading cards or kits typically consist of 8 swatches of blue wool dyed to various levels. They consist of eight strips of wool mounted side by side on a small card; each strip or reference is colored with a blue dye that fades after exposure to a known amount of light.

The Ultraviolet (UV) radiation in light is responsible for the ink fading and hence the change in the blue wool. Hence the blue wool scale has been widely adopted as a standard during UV exposure or UV weathering tests.

Threadart Premium Felt by The Yard - 36" Wide - Light Blue | Soft Wool-Like Feel | 1.2mm Thick Fabric for DIY Crafts, Sewing, Crafting Projects | Compatible with Cricut Maker

Check out our blue wool yarn selection for the very best in unique or custom, handmade pieces from our yarn shops.

Browse our selection of blue yarn for knitting and crochet available in several shades such as royal blue, light blue, baby blue, sky blue, and navy blue.

100% Cotton Aran Yarn 1.76oz (50g), 93 Yards (85m) - Royal Blue Worsted Wool for Crochet or Knitting - Soft, Lightweight for Sweater, Clothes

Dec 15, 2023 · Now the German Fastness Committee (DEK), who is the major producer of ISO Blue Wools, published a correction factor for the latest batches of ISO Blue Wool No. 6 for hot light fastness testing. The correction factor was established by the Saxon Textile Research Institute (STFI) by directly testing next to each other

Nov 15, 2019 · In ISO 105 B02, there have detail describe for blue wool reference of 1 – 8 & L2 – L9, all of which are wool and all have eight grades of blue wool standard, and the light fastness of each higher-numbered blue wool reference is approximately one time …

Dec 21, 2021 · The light fastness rating system is based on the rate of fading of eight blue-dyed wool samples (blue chips) which are rated from 1 (poor) to 8 (excellent) are given in next section. The test involves assessing samples once during the test and again at the end.

The most well known scales measuring the lightfastness are the Blue Wool Scale, Grey scale and the scale defined by ASTM (American Standard Test Measure). [11] [12] [13] [14] On the Blue Wool Scale the lightfastness is rated between 1–8. 1 being very poor and 8 being excellent lightfastness. In grey scale the lightfastness is rated between 1 ...

May 8, 2022 · The Blue Wool Standard consists of a card that contains eight sections of blue-dyed wool cloth, each with a different lightfastness. The dyes fade at a known rate. Each section requires about twice as much light exposure as the preceding section in order to …

100% Natural Merino Wool Roving, Color Indigo Blue, 8 OZ Size, Best Merino Wool for Spinning, Tapestry, Needle Felting, Big Yarn Roving, 19 Micron, 70 mm Staple Length

For light and weathering fastness testing, our Blue Wools are individually dyed wool pieces, each with a different degree of fastness to light. We supply 'European' Blue Wool Standards for ISO 105-B08 from Deutsche Echtheitskommission, and American Blue Wools from AATCC.

ISO Blue Wools. The ISO blue wools are each dyed with a different dye giving rise to light fastness scale which is an approximate geometric progression, ranging from 1 to 8. The full range of ISO blue references is currently available.

Check out our blue wool fabric selection for the very best in unique or custom, handmade pieces from our craft supplies & tools shops.

The Bluefaced Leicester is a British breed of longwool sheep.

Got the blues? We certainly do with this wide selection of blue yarn. Shades include medium to dark, navy and turquoise.