We use the technology and the technique for keeping books as in the former socialist countries. We put much attention on lighting or storages. We try to protect our books from the natural light and keep them in darkness rooms and prefer to use electrical light. Bulbs are used to set on 2 meters of distance from each other and no more than 40-60 watt for a bulb. Paper, cardboard, suede, pergament and other necessary materials for making books are sensitive on moisture.
Much moisture is very dangerous for books and it gets some possibilities to breed microorganisms.
Now we establish a system of the improving the air conditions in the storages. PB-16, and we also measure the air temperature every day. Once a quarter, we measure the moisture by hydrometer. We try to be on this level. Mongolia is a dry climate country.