ISO 5799:1991 Preview
Photography -- Direct-exposing medical and dental radiographic film/process systems -- Determination of ISO speed and ISO average gradient
This standard was last reviewed and confirmed in 2016. Therefore this version remains current.
Specifies measuring methods so that the film/process system can be obtained reproducibly and can also be compared with those of other systems. Describes sensitometric procedures for films exposed directly to X-rays. This second edition cancels and replaces the first edition (1981).
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A standard is reviewed every 5 years
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