How To Make Different Sed in washing- Textile Farm

Today, I will write a few things about the change in the message of SED.

Different technicians say, Sed is 18-20 / 19-20, but is it true in textile language?

            The color shed chang / stain is measured with grayscale, and the highest and the lowest readings are - 1-5, so 18/19-20.

 See picture:- 

Most of the wash/dyeing technician says the color difference to the standard is like- 18-20/19-20, to measure the color change of the outcome verses to the standard. But where color changing is actually measured using gray scale where no 19-20/18-20 remaining there. there is only remaining 4-5/ 5, or like 4 / 3-4 ... etc.  

There are two different type of gray scales in the market, one is  Color changing , another one is  Color staining.

Standards: -  AATCC standard and ISO/SDC-UK standard. 

Most of the major larger buyer recommends : AATCC standard gray scale for there test related work. 

Anyway, we should understand which one is correct and which one we should use to say the color stage unit. 

Once I have also found some of the wash technician and lab technician wrote to me via email that the color fastness to Rubbing is : 2.3 of a garment. I wondered!! haha, its funny, how could they write it to me... they are from a buying house and they should know the standards. it should be 2-3. (viewers, please check the gray scale above) there is no 2.3!!

Thanks for reading.

Author-

K M Zahidur Rahman

Executive -R&D

Hameem Group