Handbook for Royal Naval dental surgery attendants.

  • Great Britain. Admiralty.
Date:
1949
Catalogue details

Licence: Public Domain Mark

Credit: Handbook for Royal Naval dental surgery attendants. Source: Wellcome Collection.

    73/164 (page 59)
    Fixing The films are transferred to the fixing solution (normal strength) where they should remain for ten minutes. During this time they should be gently agitated every two minutes. It is safe to admit full light in the Dark Room after the films have been in the fixing solution two minutes. Washing After the films are fixed, they are removed from the tank and washed under running water for about 30 minutes. If running water is not available, still water may be used, but it must be changed at least eight times, and the films kept in each change of water for five minutes. Drying Films in the wet state are easily damaged, and must be handled with great care. Still on the film hanger, they are dried by hanging them in a current of air in a place free from dust. If desired, drying may be accelerated by immersing the films in spirit for about a minute, afterwards hanging them up in the draught from an electric fan.