The National Archives is making earnest efforts to ensure longevity to documents in its custody through various conservation and photo-duplication processes. The Department has invented a unique process of repairing and rejuvenating documents with the help of cellulose acetate foil and tissue paper, which is known the world over as "Solvent or Hand Lamination" process. Besides its being reversible it has the unique quality of repairing very weak, badly damaged paper or documents. The Conservation Research Laboratory of the Department is constantly busy testing material required for repairing documents and has very recently been successful in formalizing a process for rejuvenating palm leaves that have gone dry and are cracking because of age or loss of flexibility. Another very significant achievement has been the fabrication of a portable fumigation vault for use in Archives and Libraries. The vault has been designed to reduce the time of fumigation and concentration of fumigants. It can also be used for drying of wet documents and for non-acqueous de-acidification of records.

The National Archives is as well trying to ensure longevity to documents in its custody through an elaborate Microfilming Programme which is being practiced by it for over 3 decades now, and it is being used as a measure for preservation of records against deterioration from use or loss due to natural ageing and fading of inks. The Reprography Division equipped with modern machines not only attends to the needs of scholars apart from its normal function but is also engaged in the gigantic task of preparing security microlfilm of valuable records as a precautionary measure against loss by fire, flood, war and sabotage. This set of negative copies of microfilm rolls is being kept in the Regional Office at Bhopal.

The Reprography Wing has also a mobile Microfilming Unit which visits various parts of the country to Microfilm documents that cannot be brought over to the National Archives in New Delhi or its Regional Office/Records Centres in Bhopal, Jaipur, Pondicherry and Bhubaneswar.