The Blue Wool test standard is comparable to ASTM D 5383-02 and ASTM D5383-97. Very Low resistance. Traditionally this test was developed for the textiles industry but it has now been adopted by the printing industry as a measure of "lightfastness" of ink colourants and also within the polymer industry for measurement of pigment & colour stability (lightfastness). Traditionally this test was developed for the textile industry, but it was later adopted by the printing industry as a measure of lightfastness for ink colourants. The Blue Wool Scale measures and calibrates the permanence of colouring dyes. Moderate resistance. Each textile fade card features pieces of wool cloth dyed with blue dyes of different degrees of fastness which are used as light fastness standards. A standard Blue Wool textile fading test card is also placed. The Blue Wool Scale measures and calibrates the permanence of colouring dyes. It is tested under museum conditions. £0.00, Mannequins for Conservation Storage & Display, Photo Album Refill Pages - Print File Archival Storage, Unbuffered Large Textile Storage Boxes | 5 Sizes | Up to 1524mm x 457mm, Unbuffered Acid-Free Tissue Paper - 16gsm, Light Meter with Thermal Radiation Sensor (Lux/UV/Temp/Infrared), Environmental Meter | RH / Temp / Light (UV & Lux). A dull climate will be very different to a desert exposure in Africa. This forms a numerical scale of 1 to 8 where 1 has the poorest light fastness, to 8 which has the best light fastness. 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. The typical conditions for ISO 105-B02 are: 42 W/m2 (300 – 400 nm)* 50°C BST; 40% effective humidity (use red azoic fabric to determine). The lightfastness is indicated by the grades on the Blue Wool Scale: BWS 1 = poor BWS 5 = good BWS 2 = low BWS 6 = very good BWS 3 = average BWS 7 = extremely good BWS 4 = rather good BWS 8 = excellent The lightfastness values which we guarantee for are indicated on the labels on our tins and are established by the assessment of proof prints. Blue Wool Scale and the light-fastness of ink The Blue Wool Scale measures and calibrates the permanence of colouring. We use cookies for essential functions and optimisation of this website. Blue Wool Scale "The Blue Wool Scale measures and calibrates the permanence/lightfastness of dyes and pigments. These are a series of 8 wool fabrics dyed with specified blue dyes to give blue wool cloths ranging from very low light fastness to very high light fastness. Average values for time as measured in the U.K for full strength ink is as follows :-. Blue Wool 6 –Over 6 months. Light from the Xenon lamp has the nearest artificial wavelength distribution to that of the sun. The test simply compares which blue pigment fades at the same time as the ink sample on test. Vinces Road Blue Wool 2 –About twice as good as 1. Faber-Castell uses the Blue Wool standard to evaluate light-fastness. Testing is typically done by controlled exposure to sunlight, or to artificial light generated by a xenon arc lamp. Blue Scale - Textile Fading Cards Textile fading cards test for effects of light on paintings, documents and textiles with blue indicating scales. The Blue Wool Scale measures and calibrates the permanence of colouring dyes. JMB cadmium pigments, like all cadmium pigments, have excellent light-fastness throughout the whole range from yellow to deep maroon. The Blue Wool scale, of 1 to 8, uses samples of wool dyed with 8 different blue pigments each of which fade after different exposure times: 1 being the least resistant and 8 being the highest. Direct comparisons of the Blue Wool Scale to the light fastness required to meet BS 5609 do not exist. The blue wool card allows you to monitor the net exposure to light given to objects on display and to alert conservators to adjust intensity of illumination. Labels passing BS 5609 have light fastness values over Blue Wool 6. Two identical dye/pigment samples are coated out then one is placed in the dark as the control and the other is placed in the equivalent of sunlight for 3 months. The Blue Wool standard relates to our star icons as follows: Blue Wool 7 –Excellent performance, only a limited number of pigments give this level of light fastness even at full strength. Basket: In addition the film weight of the ink applied can make a difference, as does the degree of white pigment within a given formulation. The light-fastness is indicated on each as follows: *** = Maximum light-fastness = 7,8 Blue Wool Scale ** = Very good light-fastness = 5, 6 Blue Wool Scale * = Good light-fastness = 3, 4 Blue Wool Scale A standard Blue Wool textile fading test card is … Norfolk Please see our Privacy Policy for more information. Hazard Warning Labels & Placards (Warning Diamonds), Limited Quantity & Environmentally Hazardous Labels, ADR Panels, ADR Plates, Hazchem Panels & Vehicle Marking, Dangerous Goods Notes & Dangerous Goods Declarations, Tactile Warning Labels (Tactile Triangles), Blue Wool Scale and the light-fastness of ink. The ink is then allocated that number on the Blue Wool Scale. Good resistance. High resistance. The scale ranges from 8 (excellent – very low rate of fading) to 1 (very poor – extremely fast fading). This standard utilizes eight scales to evaluate light-fast colors and it has been used for Artist paints for many years. IP22 4HQ, Tel: +44(0) 1379 647400 How light fastness is measured? Very Low resistance. The blue wool card allows you to monitor the net exposure to light given to objects on display and to alert conservators to adjust intensity of illumination. Email: info@preservationequipment.com. The “Blue Wool Scale” is the internationally recognized method of quantifying lightfastness, defined under the British Standard BS1006. Generally the time the ink takes to fade depends where in the world you are. Light fastness tests, using the Blue Wool scale as a reference, are carried out using a Xenon arc lamp as a light source. Some organizations publish standards for rating the lightfastness of pigments and materials. Click to ‘OK’, or continue browsing to accept all cookies. Traditionally this test was developed for the textiles industry but it has now been adopted by the printing industry as a measure of "lightfastness" of ink colourants and also within the polymer industry for measurement of pigment & colour stability (lightfastness).

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