How the Nylon fabric weight is measured I heard the fabric quality as 300T. What is T denotes is it Tex. How to measurecalculate this?

300T means 300 Thread count (total of Ends/inch & Picks/inch) eg a greige construction like 70/24 x 70/24, 108 x 94 x 63" would be called a 202T (108+94) nylon fabric Hope this helps SK