July 17, 1994
Latest Update Saturday, January 17, 1998
Tips and tricks about fast developing with chairside developers.
If the films appear to be fogging, the light is too bright.
Since films are developed by time and temperature, you need to know the temperature within one degree.
Air oxidizes the developer.
They are much cheaper and can be thrown out or lost at little cost.
If you have to pull the film out sooner than that, you have probably overexposed.
This will result in poor x-rays and lowered contrast.
Timers that require you to push a button, I have found, are more trouble than they are worth.
Agitation increases the contact and speeds the developing process.
The times listed on the instructions with the developers assume constant agitation.
Theoretically you don't need the wash between the developer and fixer but it greatly extends the life of the fixer not to have pure developer carried into the fixer.
As soon as the white protective backing on the film has been dissolved by the fixer, the x-ray is fixed.
Any more fixing simply soaks the film base with fixer and increases the need to wash longer.
Fixer running down your hand to your elbow is uncomfortable and smells.
If you have not overfixed, this may wash it adequately by the time the appointment is over.
Washing for five minutes in running water or a 20 minute soak in the sink is more than adequate to make the x-ray permanent.
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