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Mounted on the back of the film holder is the dry-ice chamber with its screw-on cap and spring-loaded plunger for pressing the dry ice against the cold plate. The chamber holds about three tablespoonfuls of granular dry ice, which lasted about 40 minutes on a night when the air temperature was about 60|degrees~ Fahrenheit.
Example of a temperature/humidity chamber Example of a Walk-In Environmental Chamber used for automobile reliability testing in various simulated environment. An environmental chamber, also called a climatic chamber or climate chamber, is an enclosure used to test the effects of specified environmental conditions on biological items, industrial products, materials, and electronic devices and ...
The earliest mounts used a type of aluminized cardboard mask inside a cardboard foldover. This tended to warp with exposure to humidity, changing the alignment of the film chips. In older slide collections, the film chips may have slipped to the point that the slide is unviewable without readjustment, and one film chip may have even fallen out.
Moisture sensitivity level (MSL) is a rating that shows a device's susceptibility to damage due to absorbed moisture when subjected to reflow soldering as defined in J-STD-020.
Humidification: an EDD works best when the relative humidity is less than 60%. [12] Some studies have also suggested that absolute humidity is important. [15] To help ensure proper humidification, most manufacturers provide a 'humidification chamber' that can be used to prepare a document for examination.
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