Advertisement

Agilent Chemstation - Absorbance Units

Discussions about chromatography data systems, LIMS, controllers, computer issues and related topics.

3 posts Page 1 of 1
Hi,

Can anyone please advise where/how I can change the absorbance units in the offline Chemstation from norm to mAu?

I read the Chemstation manual and see that this can be set under "calibration", but I did not set any "calibration". All I remember doing is double clicking on the sequence with runs in progress.

I have no idea how the switch came about. The online Chemstation is still measuring in mAu for the runs in progress.

Thanks in advance!
What are you displaying for the chromatogram? If you have signals overlayed with each in full scale, it has to normalize the chromatograms to display them overlayed in full scale. Try 'All the Same Scale', or display separated. This is under 'Graphics > Signal Options'.
Sorry, I should have asked if this in on the chromatogram graphics, or in the report? My answer was for the graphics. For the report, select 'Calibration > Calibration Settings' and change "Units" to mAU.

Also check 'Reports > Specify Report' and see what you are reporting, Area%, ESTD, ISTD, Norm%, etc.
3 posts Page 1 of 1

Who is online

In total there are 24 users online :: 0 registered, 0 hidden and 24 guests (based on users active over the past 5 minutes)
Most users ever online was 4374 on Fri Oct 03, 2025 12:41 am

Users browsing this forum: No registered users and 24 guests

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