As part of the research concerned with the development of fixed, copper based preservatives, the salts of polyhydroxycarboxyIic acids, have been used in copper sequestration studies and fixation trials in Pinus sylvestris splinters. Selected compounds have been shown to be effective sequestrants at low concentrations allowing alkaline solutions to be formulated. Leaching trials following a 48 hour wet fixation period at 40°C showed that aximum copper fixation can be achieved from formulations within the pH 7 to pH 9.0 range, providing sequestrant concentrations are optimised.

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