The ICAC Task Force on Commercial Standardization of Instrument Testing of Cotton (CSITC) was created for achieving reliable instrument test results for the global cotton trade. A central topic is a dependable evaluation of the capability of cotton testing facilities to produce reliable test results for micronaire, strength, length, uniformity and color. The output of the developed Round Trial is a single, aggregated rating number as well as detailed information regarding accuracy and precision to improve laboratory performance. The results of the Pilot Round Trial with 46 participating laboratories are presented.