Rehousing and labelling is an important part of collection management, as it helps us to keep track of objects, assess the size of the collection and ensure the objects and the stories they tell us can last another 100 years or more. This process can take some time, and photographic materials require specific care.
- Each box in the collection holds a variety of photographic formats. Materials that we work with include both colour and black and white prints, negative strips and medium format negatives, colour transparencies, as well as ephemera.
- When rehousing and storing any object, it is most important to protect it from light, humidity, fluctuating temperatures and pests. Black and white prints are usually relatively stable in terms of how they react to the environment around them, however it is still important to keep them secure, stable and to reduce handling the object directly.
- To keep these objects safe and stable, we enclose the them in a polypropylene sleeve or buffered envelope and place them in appropriate storage. Black and white prints are kept in cool storage – at about 12 degrees Celsius.
- Negatives, black and white transparencies and colour prints tend to be more sensitive to environmental fluctuations. Colour prints, for example, can lose and bleed colour over time, while the cellulose used in negatives can absorb water, or warp in fluctuating temperatures. To avoid this these formats are kept in cold storage – at about 4 degrees Celsius.
Image credit (right): Mount Everest, photographed by Mike Gill. Collection of Auckland Museum Tamaki Paenga Hira, PH-2010-4-S4-F5-19.