I have routinely used nitrogen to purge ICPs, from "house nitrogen", that is
boil-off from large liquid nitrogen tanks used to supply nitrogen to the
building. It works very well and I had no trouble reaching 169 nm on several
JY ICPs using nitrogen. I always had an oil/particulate filter and water
filter on the line leading into the instruments.
Eileen M. Skelly Frame, Ph.D.
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