Thunder Scientific”s HumiCalc Software is designed to simplify complex humidity conversions. The software now features capability to calculate uncertainties.  Known items contain expandable uncertainty fields that allow entry of individual uncertainty components. In addition to displaying calculated humidity values, a calculated expanded uncertainty is also displayed at the desired confidence level. Each calculated uncertainty is expandable to display the individual components that made up the final expanded uncertainty value. For more details, see  www.thunderscientific.com/software/humicalc1.html.