to know the stability of colour of the fabric or yarn
Wash fastness? Perhaps you mean color fastness? If that is the case, color fastness is the ability of fabrics to retain the dyes used to color them. Some fabrics hold dye within their fibers extremely well - like denim - while others do not (mostly synthetic or artificial non-natural fabrics) and tend to "bleed" when they are washed. The denim would therefore be more "color fast" than the other fabric.
Washing soda is sodium carbonate and phenolphthalein will be pink in colour in a solution of washing soda.
No detergent can restore the color. Some of them and washing the same colors together and washing in cold water can prevent color loss. You can have the color restored by having them re dyed. You can do it yourself using rit dye or alterations specialist can do it for you.
Fire. I'm sorry i couldn't resist. I would use Castrol degreaser. If its oil based it will get it out (check a discreet spot for color fastness) and rinse with water
Someone may have used color dye in the machine. Make sure to separate the color clothing from the white. Or get a live in girlfriend to help you do lundry.
The color fastness to sweat light of vat dyes is related to its structural features. The vat dye molecules have not the water soluble group, less polar group and the the synthetic perspiration group have a little effect on the structure of it. The huge closed conjugate system give it high resistance to the light continuously. As we all known, the cost of vat dye is higher than the reactive dye, which with high requires for the dye process control. So only in case of the high requires of the color fastness to sweat light, the vat dyes can be used for replacing some of the reactive dyes. 1. The color fastness to sweat light of the reactive dyes have the characters of reasonable sweat composition, easy test operation, strict standard and with the practical value. 2. Among the three-primary colors of the reactive color, the yellow primary color is better, the red is middle and the green is bad. 3.The flame retardant fabric processed with the green vitriol, the color turn yellow, with CuSO4, the color turn red, which two have little influence to the color fastness to sweat light. 4. Some of the light fastness khan agent and the anti UV agent can improve the color fastness of reactive dyes. 5. To direct fast dye for the medium and light color, the color fastness to light and sweat light is not high, wet color fastness is not as good as the reactive dyes, which can't replace the reactive dyes with low color fastness to sweat light. 6. Some of the sulfur dyes have good color fastness to sweat light, which can be used for reference. 7. The color fastness to sweat light of the vat is good, which can replace the reactive dyes with middle and low color fastness to sweat light, which is an important method to improve the color fastness to sweat light. In conclusion, the method to improve the color fastness to sweat light is, to choose the reactive dyes with high color fastness or choose the vat dyes and some of the sulfur dyes. In the actual production, we should choose according the requires of the color fastness, production cost and the technic. By YULONG tex
Wash fastness? Perhaps you mean color fastness? If that is the case, color fastness is the ability of fabrics to retain the dyes used to color them. Some fabrics hold dye within their fibers extremely well - like denim - while others do not (mostly synthetic or artificial non-natural fabrics) and tend to "bleed" when they are washed. The denim would therefore be more "color fast" than the other fabric.
Color fastness refers to how resistant an item is to fading or bleeding. This term is mostly associated with clothing and other textile materials.
Grey Scale is a standard method of measuring the fastness of the fabric against washing, wet/ dry rubbing, perspiration and light.
color loss, washer, always was on cold for color fastness. shrinkage is dryer, you can avoid this by using low heat or no heat tumble dry
Dark shade dyeing with special reactive dyes involves using dyes designed for deeper colors and better color fastness. Quality control measures for this process can include checking dye penetration, color uniformity, and colorfastness to washing and light exposure. This ensures consistent and high-quality results in the dyed fabric.
Washing soda is sodium carbonate and phenolphthalein will be pink in colour in a solution of washing soda.
fastness
tempo?? -_-
turqoise
Spray it with vinegar and iron it before washing
drug fastness is mutational forms of the original bacterial strains that appear due to sub clinical doese of the drug (under treatment)