Chromatography Forum

Dear Friends,
First I would like to say hello to all. I am a chemical engineer and I am going to work with GC (Chrompack CP9001), I faced with a problem today, when I was starting to work with the instrument, it shows me "Check LN2" and the signal for B was going up and up !
Would you please help me to know what is LN2 ? I have checked its catalog and haven't found it.
Hope to hear from you.
Thank you,
Semiramis

hi

If you are using nitrogen is carrier gas, if so check the flow of carrier gas.

LN2 stands for Liquid Nitrogen. On the 9001 this may be used for oven cooling. You may have the CRYO MODE selected on page 7 (options page) in combination with an oven temperature setpoint that is below ambient.

JW