Observations Equation (8) shows us that the 2010 work by the author was limited in scope, since the data evaluated were based only on air-water and air-Isopar simulator weeping observations. The conclusion in 2010 was that a fixed value of 0.6 was appropriate as a minimum guideline for the stability factor. With the current work here, which now includes real column efficiency data, the author now concludes that the minimum stability factor is heavily influenced by the operating pressure and, to a limited extent, by hole size, percentage open area and weir height. Figure 11 shows that Equation (8) does a reasonably good job of representing the data. However, because of the subjectivity of determining exactly where the tray efficiency " drops off " in the data sets examined, there is a significant amount of scatter built into the data shown in Appendix A. A narrower error band than 25% in the Figurehttp://www.welland-tuxhorn.de http://adlinks.chemengonline.com/80073-15 http://WWW.CHEMENGONLINE.COM