sentences:  Additionally, since the goal of conservation-restoration is to only do the minimum required for preservation, this initial assessment falls in line with the American Institute for Conservation (AIC) Code of Ethics which outlines best practice for conservators and scientists alike.Along with assessing the current state and potential risk of future deterioration of artworks and objects, scientific study may be necessary to determine if there is risk to the conservators themselves.For example, some pigments used in paintings contain highly toxic elements such as arsenic or lead and could be hazardous to those working with them.