RE:RE:RE:RE:RE:popular sicence MRE shelf-life testing ... Just a little additional info. I spoke to the company in Feb 2018 about this and was told that preliminary shelf-life testing on a couple of MRE’s had already taken place. Natick uses a 6 months high temperature test (110 deg F / 43 deg C) to determine preliminary suitability. The initial test results were positive which is why development of additional products / testing was approved.