The moisture content of about 750 samples of cotton fiber from across the United States were measured before and after equilibration at standard temperature and humidity conditions using oven, resistance and infrared techniques. Results indicate that the samples equilibrated at 6.8% moisture content (oven-based), wet basis, with a standard deviation of 0.45. Moisture contents ranged from 5.7 to 7.9%. Moisture content measured by a resistance technique averaged 6.9% with a standard deviation of 0.18. Moisture contents ranged from 6.2 to 7.4%.

Results indicate that the moisture of samples should be known during fiber quality assessment.