Work continues on our study to determine the effects of changing testing environment on HVI measurements. Tests were conducted in the environmental control room at the Cotton Quality Research Station in Clemson, SC. A set of 25 cottons representing both U.S. and international growths was preconditioned (dried at 60 deg. C for 24 hours)and was tested at 70 deg. F at relative humidities over a range of 45 %RH to 85%RH. Results are reported of the rate of change of length and strength with RH.