Samples of linen canvas prepared in 1956 and kept in the Tate Gallery for 24 years were tested for tensile strength, acidity, reflectance and sulphur content. The samples included both unimpregnated linen and wax/resin impregnated linen. They were arranged so that some had been exposed to light and some protected from it. In addition a number of pieces within each sample were stored in a sealed Perspex-fronted container. Significant among the findings was that enclosing canvas in sealed containers had provided considerable protection against deterioration. Wax/resin impregnation of the samples aged in the open afforded similar protection, but there was also a small weakening effect in the same samples when they were enclosed.
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Studies in Conservation