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does anyone have a lab that uses/used an ATMI CDO scrubber in it? The tool requires a nitrogen source but out nitrogen generator just broke so now our nitrogen is about 7-10% oxygen. We flow hydrogen in the scrubber from the process gases but I am not sure if the nitrogen and the hydrogen ever...

I unfortunately cannot upload the entire file as it is quite large and there are confidentiality issues. I was hoping this was a simple fix, maybe it is not. Thanks though.

I am sort of a novice with Mathcad and I am trying to solve a problem using an indexed summation. I have from i=1 to N and N=2 (for now) but of the two terms indexed over i, one is a number and the second is a variable that I would like to be able to graph over. I do not know how to do this...