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U.S. Department of Health and Human Services

Radiation-Emitting Products

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We are a mobile facility with a van that does not have on-board processing. We have a film-changing room on the van where we load and unload cassettes with film during the day. When the van returns to our main office, we batch process the films. Do we have to perform a semiannual test for darkroom fog in this film-changing room?

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Yes. Since you use a room to load and unload cassettes with film, you must test this room for darkroom fog as well as the darkroom for your processor. Both rooms have the potential to fog films and degrade image quality.

Back to Darkroom Fog Semiannual Equipment Quality Control Tests

Back to Mobile Units Equipment Quality Control