Fiber samples of six cotton varieties were evaluated for length, uniformity, strength, elongation, and micronaire by a modern HVI classing line and by individual instruments. Both the HVI line and the individual instruments ranked the six cottons similarly for all fiber properties except elongation percentage.

In a related comparison, fiber strength measured by the HVI line and by the stelometer was correlated to yarn strength. A stronger correlation was found to exist between yarn strength and fiber strength measured by the stelometer than by HVI classing.