Conservation vs preservation & ethics

Conservation and preservation are often used interchangeably, but they name different scopes of work. Understanding the distinction is the first professional competence in caring for records and heritage materials, because it determines who acts, when, and with what mandate. Getting the terms right also protects the object: intervening when you should have prevented, or preventing when you should have called an expert, both cause avoidable loss.

International bodies - the American Institute for Conservation (AIC), the International Institute for Conservation (IIC), ICOM-CC and ICON in the UK - share a broadly common vocabulary that any GLAM practitioner should adopt.

Defining the terms

• Preservation is the umbrella: all managerial, financial and technical actions that extend the usable life of collections - environmental control, housing, disaster planning, and digitisation for access.
• Conservation is the hands-on and evidence-based care of individual objects, split into preventive (reducing rates of deterioration for whole collections) and remedial/interventive (physical or chemical treatment of a specific item).
• Restoration aims to return an object to a known earlier state and is the most interventive - and most contested - activity.

The ethics that govern intervention

Every recognised code of practice rests on the same principles: minimal intervention, reversibility (or at least re-treatability), use of stable and tested materials, and full documentation. Respect for the integrity and evidential value of the original is paramount - a treatment that erases historical evidence, however tidy the result, is a failure.

• Do only what is necessary, and prefer the least intrusive option.
• Never undertake work beyond your training - competence is itself an ethical duty.
• Record what you did, why, and with what, so the next custodian can understand and reverse it.

Key takeaways

• Preservation is the strategy; conservation is the object-level care, either preventive or remedial.
• Minimal intervention, reversibility, stable materials and documentation are non-negotiable ethical anchors.
• Recognising the limit of your own competence is a core professional obligation, not a weakness.