Managing Collection Environments (MCE) is a multiyear initiative that addresses a number of compelling research questions and practical issues pertaining to the control and management of collection environments in museums. The initiative combines scientific research with fieldwork, investigating the response of hygroscopic materials to climatic fluctuations and the monitoring of objects in situ. Educational activities ranging from short courses to expert meetings and information dissemination, through print and electronic publications, support and extend the research activities. Throughout all phases of the project, the GCI will work in coordination and cooperation with international entities actively engaged in this area.


In recent years, there has been increasing concern over practices for maintaining climatic conditions for objects—not only those imposed by institutions in international loan agreements—but also, more generally, for collections on long-term display and in storage. These concerns reflect the imperative of environmental and financial sustainability as well as the need to take into account new understandings about collection requirements and advances in approaches to environmental control.

Since the mid-1970s, many museums have regarded a relatively narrow set of environmental parameters, 70° ± 4° F (20° ± 2° C) and 50 ± 3% RH, as providing the optimum conditions for the preservation of their collections. Although never actually prescribed as a standard by a professional body, this range nonetheless has served as a de facto standard and has become a frequent and—until fairly recently—generally unquestioned specification for loan agreements between institutions. However, this somewhat narrow target range has proven difficult for collecting institutions to meet consistently for a number of reasons, including those relating to the vagaries of climate, the capabilities of climate control systems, and the availability of human and financial resources necessary for maintaining tight controls. Managing climatic conditions within this narrowly defined range is also highly dependent on continued access to reliable and relatively low-cost energy sources, a situation that can no longer be taken for granted. As a result, museums, libraries, and archives are now engaged in a reconsideration of their specifications for collection environments, taking into account the growing imperative of both environmental and economic sustainability.

While some members of the conservation field are working under new specifications that allow a broader climatic range, there is nonetheless lingering uncertainty within the profession about the consequences to collections from adopting a more liberal approach to exhibition and storage environments. A major impediment to a wider acceptance of broader environmental parameters is the recognition that the field currently has an incomplete understanding of the chemical and mechanical reactions of some hygroscopic materials to relative humidity and temperature levels outside a narrow range. More research is needed to determine whether permanent damage occurs in these materials, or to more susceptible objects associated with them, in the broader climatic ranges under consideration, and to understand the rate and degree of fluctuation they can withstand.

The Managing Collection Environments initiative focuses on the outstanding issues and questions relating to sustainable collection environments. It aims to inform environmental strategies for collections, taking into consideration the types of buildings and environmental systems that will sustain climatic conditions and acknowledging that any strategy will have to be an integral part of heritage preservation as a whole.

Its specific objectives are to:

Carry out research addressing critical questions pertaining to the behavior of materials under a range of environmental conditions

Propose viable decision making and practical strategies for collection environments based on an understanding of risk and incorporating recent advances in active and passive environmental control

Encourage critical dialogue among colleagues working in this area through collaboration, workshops, and expert meetings

Disseminate research results and field activities through educational activities, publications, and professional meetings

The initiative will draw upon expertise within the GCI's Collections and Science departments as well as that available through its network of partners.

Page updated: October 2015