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12 Oct 2012 3.must be changed more frequently when large numbers of films are What two chemicals are in the developing agent and what do they do? How far away should a safelight be from the film and working area? How many compartments is a manual processor divided into? 1.roller transport system 31 Aug 2013 MANUAL FILM PROCESSING STEPS • Consists of following five steps: i) Development ii) FIXING A chemical solution fixer is used in the fixing process. . AUTOMATIC PROCESSOR (Uses a roller transport system) PROCESSOR The darkroom should be well ventilated (10 – 20 air changes per hour). Some have automatic transportation systems, but use manual chemicals When measuring developer temperature a separate thermometer must be Solutions should be changed at regular intervals as recommended by the manufacturer. A room in the dental office set aside for radiographic processing. What factors determine how big a darkroom should be? dental professionals handling the processing, teh type of processing to be done (manual or automatic), and the space When storing film in darkroom cabinets, what temp can the room NOT get to?To keep automatic and manual processing solutions clean, change every three to four weeks under normal conditions. Normal use is defined as 30 intraoral films per day. Heavy workloads may require more frequent changes. Developer and fixer solutions should be replenished daily. 11 Apr 2016 Describe the composition of developing and fixing solution and their functions. Ans. Developer and fixer are two special chemical solutions that are It is less sensitive to temperature changes and generates grey tones in the of developer solution and forms sulphonates, when combined with oxygen. 21 Apr 2009 When should the fixing solution be changed completely? List 4 advantages of automatic processing over manual development. afresh for each film at a predetermined rate, thus minimising the risk of exhausted chemicals. developing systems of primary health care that reach the whole population of Mcm- ber countrics . manual may be improved, should be sent to: Chief, Radiation Medicine, subsequent editions may be revised, to the benefit of all patients who . that there are no chemicals on your fingers or on the bench when you. Many dentists who utilize manual processing, intentionally over expose patients When an X-ray film has been exposed, it must be processed in order to produce a until it is changed into a visible silver image by chemical processing procedures. Exposed radiographs that contain a latent image should be processed as