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শুক্রবার, ২০ ফেব্রুয়ারী, ২০১৫

Composition test

Composition test

 Cotton & Others (blende) Fabric:

Necessary Tools:

   a.       A test specimen.
   b.      A biker and glass rod/stick.
   c.       Sulfuric acid-98%.


Process:

      1)      Cut a specimen than keep in dryer for remove humidity and then weighted it in 30Sec. Such as:           10 gm.
      2)      Make a solution [Acid: Water=7/6:3/4].Wait until cold. Than fabric keep in the solution and                handle by glass rod about in 50/60 second cotton part will be burned.
      3)      Sample will be  Washed off than dry it in dryer and measure the sample weight in 30 Second.               Such as: 8gm.
      
      Calculation :

{(Before weight-After weight) / Before weight} * 100 = Cotton %
{(10-8)/10}*100=20% Cotton.

  Lycra & Others Fabric:

Necessary Tools:
      a.       A test specimen.
      b.      A gyro wash machine.
      c.       N.N- Dimethylformamide {(CH3)2NC(O)H}  organic compound.




Process:

       1)      Cut a specimen than keep in dryer for remove humidity and then weighted it in 30Sec. Such as:          10 gm.
       2)      Sample keep in gyro wash pot than take N.N- Dimethylformamide.[M:L=1:20/30].
       3)      Than it will be run about 30/40Min at 95/1000 C Temperature.
      4)      Sample will be  Washed off than dry it in dryer and measure the sample weight in 30 Second.               Such as: 8gm.
     
      Calculation :

{(Before weight-After weight) / Before weight} * 100 = Lycra %
{(10-8)/10}*100=20% Lycra.



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