Abstract
Abstract A few years ago the Stewart Company changed the design and material of a range of plastic containers long favoured by museum staff for preventive conservation storage tasks, in particular for their ability to provide a barrier to extreme changes in relative humidity. Practitioners have found that the new containers compare unfavourably to the old style. Very little is to be found in the literature on alternative containers, or indeed, the reasons why the Stewart containers were preferred over others initially. A study was undertaken to test the performance of both old polyethylene and new polypropylene Stewart containers together with alternatives. While all the containers tested did provide some kind of barrier to changing external relative humidity conditions, the difference between their apparent effectiveness was not great. The old style Stewart containers were found consistently to out‐perform the others tested albeit by a very small amount. Comment on other criteria for choice of container,...
Published Version
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