Thursday 20 September 2012

BUFFER SOLUTION [Film Technology]




BUFFER SOLUTION 
[Film Technology]

The Ph of the solution can easily be raised by the addition of a strong alkali such as sodium hydroxide.  To maintain it as a steady value, however, it is preferable to add larger quantities of a weak acid salt such as sodium carbonate, or borax. These form a stable, buffered solution whose Ph is first changed by the by-products of development.








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