With ever increasing demands for lighter weight bottles, US-based AGR International, in conjunction itch Container Science, has introduced an update to PPT3000 testing systems with M-RULE shelf-life model that will provide more accurate shelf-life estimates versus current, time-consuming methods such as Zahm-Nagel, Septum and other long-term tests. Among the changes made is the ability to directly enter wall thickness data. This enhancement, in addition to other improvements provides a more accurate estimation of shelf life on current bottle production. When AGR introduce its testing system many years ago, it offered a means to test bottle shelf life as part of a simple and quick pressure test that could be performed at or near the production line. According to Mark Rule, President of Container Sciences, the PPT3000, M-Rule provides a much more consistent and accurate representation of shelf-life measurement over results derived from real-time, long-term tests.