Printech Archive, May, 1999: diazo (blueprint/blueline) process and ammonia

diazo (blueprint/blueline) process and ammonia

Tue, 18 May 1999 14:28:21 -0400

I had someone ask me a question about the diazo process for
making blueprint/blueline type copies. Essentially the question was
what can be done to eliminate or reduce employee exposure to

Is there a version of the diazo process that does not use ammonia?
(I know there are other ways of making copies of large dimension
originals such as large size photocopiers, scanners/plotters.)

What are good practices or sources of information on good
practices for operating this (diazo) equipment and ventilating the
work area when ammonia is used.


Dave Salman



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