Experiment Name: Determination moisture regain of cotton by moisture regain tester.

Objective:
1. To determine the moisture regain of cotton.
2. To know about working principles of moisture regain tester.
3. To know standard moisture regain of cotton.
4. To write a short report basis on this experiment.

Theory:
Moisture regain is defined as the percentage of water present in a material of woven dry weight.
the percentage of moisture in a textile material brought into equilibrium with a standard atmosphere after partial drying   as a percentage of a moisture a free- weight.
Let,
Oven dry weight = D
Weight of water = W
Moisture regain = MR
MR = 100W / D %

Standard Moisture regain: Standard moisture regain for cotton fibre is about 8.5%.

Testing condition of lab : Temperature maintain in laboratory is about 25 deg C and RH is about 74%






Data table:

No of Observation
Types of sample
M.R %
Avg M.R %
01

Cotton
8.0%

8.5%
02
8.5%
03
9.0%



Result: Average moisture regain for the cotton sample is about 8.5%.


Conclusion.>>>>>>>>>>>>>>>>>>>>>>>>>