Lower total GC column pressure than the set value

Basic questions from students; resources for projects and reports.

2 posts Page 1 of 1
Hi Dear.
Firstly I would like to thank you for acceptance to join your forum which will be very helpful for me .

Secondly Ihave a problem with the total pressure of GC column than the set value although all fittings are tight and the carrier gas cylinder is nearly full and my setup is :
GC-17A
Carrier gas...nitrogen
Flow rate ....3ml/min
Splite ratio....50
Inj. temp....150 C
Det. temp....250 C
Column...DA-Carbowax 20M
Thanks.
Welcome to the forum.

What pressure do you set, and what pressure do you get ? Is the pressure stable ?

Is the flow through the column at its set value ?

Are the the split flow and septum purge flows what they should be ?

What is the pressure in the lines feeding the carrier gas to the GC ?

Peter
Peter Apps
2 posts Page 1 of 1

Who is online

In total there is 1 user online :: 0 registered, 0 hidden and 1 guest (based on users active over the past 5 minutes)
Most users ever online was 1117 on Mon Jan 31, 2022 2:50 pm

Users browsing this forum: No registered users and 1 guest

Latest Blog Posts from Separation Science

Separation Science offers free learning from the experts covering methods, applications, webinars, eSeminars, videos, tutorials for users of liquid chromatography, gas chromatography, mass spectrometry, sample preparation and related analytical techniques.

Subscribe to our eNewsletter with daily, weekly or monthly updates: Food & Beverage, Environmental, (Bio)Pharmaceutical, Bioclinical, Liquid Chromatography, Gas Chromatography and Mass Spectrometry.

Liquid Chromatography

Gas Chromatography

Mass Spectrometry