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NPD with H2 Carrier

http://www.chromforum.org/viewtopic.php?t=24077

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NPD with H2 Carrier

Posted: Mon Jan 13, 2014 8:01 pm
by colinsw
Howdy!

I'm curious if anyone has tried using hydrogen as a carrier gas with a nitrogen phosphorus detector. I recently switched my 6890 from helium to hydrogen due to cost and availability. I haven't been able to mess with it much yet, but I thought I should see if anyone has some experience I could learn from.

Thanks!

Re: NPD with H2 Carrier

Posted: Mon Jan 13, 2014 9:24 pm
by MSCHemist
It should work fine as long as you keep your total H2 flow to spec which is 3ml/min (5 max) so most of that is coming from the column carrier flow.

Re: NPD with H2 Carrier

Posted: Tue Jan 14, 2014 4:00 pm
by colinsw
Good point. My total flow was 5.5 mL/min and I was having trouble igniting. I dropped the total down to 3 mL/min and it's igniting like a champ.
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