Bry-Air preserving for the future…
Moisture is the natural enemy of preservation. It results in the decay of paper, parchments and photographic film, causing organic colors and dyes to fade. If proper measures are not taken in time, artifacts that are generally made of organic material i.e. wood, leather, paper, natural fiber, bone, ivory, etc., could be lost forever.
Humidity Control for Historic Preservation
Museums and libraries should maintain humidity levels of 40-45% RH. Museums, archives and libraries require special environmental conditions, mostly below the ambient dewpoint, especially in tropical, hot and humid climates. For antique preservation, archives and libraries should maintain humidity levels of 40 – 45% RH. This level of humidity prevents drying out of the material while, at the same time, minimizing degradation of the material by microbes, mold, and mildew. Archival preservation entails similar conditions.
Archival document storage may have different requirements depending on the item being stored.
Negative film is typically stored at temperatures of 55-65°F (13-18°C) and a relative humidity of 30%, while drawings and maps may be stored at temperatures as low as 50°F (10°C) and 30% RH. These conditions are not practical to achieve with refrigeration cooling alone. Desiccant dehumidification in conjunction with refrigeration cooling keeps the relative humidity level low and stable, thereby retarding or preventing decay from microbes and mold; key to archival preservation.
Time tested solutions for humidity control
Bry-Air desiccant dehumidifiers provide a low humidity environment which prevents microbial attack. The dry air is often enough for preservation of some materials without necessarily involving temperature control. Around the world, large and famous museums, churches and libraries use only dehumidification without temperature control to save and preserve the priceless treasures of the world.
In addition, Bry-Air desiccant dehumidifiers, when used in conjunction with air conditioning, can provide the perfect environmental storage conditions for all sorts of valuable artifacts, documents and works of art. To explore a few applications related to preservation and archival storage please take a look at our case studies.