Environmental control

Climate - Lighting - Pest control

The museum’s collections are stored in suitable temperature, relative humidity and air quality conditions. In order to ensure a quality environment, the conservation and restoration team works together with the maintenance team to supervise the installations and buildings. The most sensitive objects are stored in specific microclimates.

Light causes materials to deteriorate, particularly organic materials. In order to avoid this, the intensity and the hours of light accumulated in the course of the year are monitored, while ultraviolet radiation, the most harmful type of light, is eliminated.

Traps are used to monitor the installations and keep them free of harmful insects and arthropods. The problem of birds in the buildings and around the museum is controlled by means of physical barriers.

Record and statistical study of the data recorded by means of relative humidity and temperature sensors. (©Jordi Mota-MUHBA)

The climactic conditions of inside areas are compared to the outside in order to interpret the results. (©Jordi Mota-MUHBA)

The statistical study provides knowledge of general climactic trends, as well as sporadic risk situations.
 

The climate in certain rooms is controlled by taking air from the outside when it has the right humidity and temperature, using a sensor-based system.

The metal repository room is kept at a RH of 40% with the help of two dehumidifiers with silica gel.

Air samples being taken to measure the presence of fungi and bacteria.

Verification of light intensity with a lux meter. Objects are kept in the dark outside opening hours. (©Jordi Mota)

Glass with a 99% UV radiation filter and a window with a curtain to filter the light.
 

Sector-based lighting in the repository rooms, which are kept in the dark for as many hours as possible.

Insect traps allow us to detect focal points of insect development and to take action before they spread.

Statistical insect study used to adapt the periodic inspection protocols.

Annual auscultation of panels and beams for woodworm and termite control.

Insects in collection items are killed by means of anoxia, by replacing oxygen with an inert gas.

The presence and number of insects detected are input into a database for further study.

The necessary deterrents are installed in the buildings, such as metal spikes for birds, or nets.