In its continued mission of providing quality data in a timely fashion, the USDA, AMS, Cotton Program fully implemented a new micronaire calibration during the 2001 season. This newly developed micronaire orifice calibration utilizes stainless steel precision-drilled air orifices for the calibration of the micronaire system. This new method has provided the Cotton Program the ability to provide more precision to the micronaire calibration. Costs associated with the calibration routines have been reduced as a result of the non-deteriorating nature of the orifices and the decreased consumption of calibration cottons.