Measurement of the stickiness of cotton is typically accomplished with the Thermodector method which is time-consuming, somewhat objective, and destructive. A new device to rapidly estimate the stickiness of both seed cotton and lint cotton was patented in 1997. This study further evaluated the new device using samples from several sources. Samples were classified into level of stickiness from 0 to 3 based on the Thermodetector as the reference method. The new device differed in accuracy for each study and was generally more effective as stickiness level increased. Across the 219 samples evaluated, 78% of the samples were correctly identified as either sticky or non-sticky