7 Replies Latest reply on Jun 26, 2018 3:31 PM by ryoboyle

# Residual Solvents In Software OpenLab Ezchrom Version A 04.07

Hi,

I need process Residual Solvents, using software OpenLab Ezchrom Version A 04.07, but i don't know how retired results in software. Normally i used using Excell for calculete this. How to calculeted this in software?

Equation

4(C/W)[Ru/(Rs-Ru)]

C: concentration residual solvents in standard

w: weithg sample

Ru: area residual solvents in sample

Rs: area residual solvents in standard

Thanks,

Flávio Barbosa de Melo

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

Hello,

I added tags to this post to increase visibility.

This calculation can be performed on an intelligent report. Since you would need to pull information from multiple data files to perform the calculation, this would need to be set up as a sequence summary report.

The Intelligent Report Template Editor Concepts Guide can be found at this link: https://www.agilent.com/cs/library/usermanuals/public/RTEConceptsGuide.pdf

An important section for you to reference would be Calculation Variables (begins on page 139). I suspect that you will need to store the peak areas in your standards as a variable that you can then call in a custom calculation.

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

Hello ryoboyle,

Thank's for this information. I will see this link for help and try in lab.

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

ryoboyle hi,

in discussion with the laboratory, we checked to summarize the formula. But when entering the intelligent report we can not apply the proposed formula, could help me, we are having difficulty pulling the concentration values of the concentration and the answers of the standard

4 (c / w) * (ru / rs) - 4 (c / w)

C: concentration residual solvents in standard

w: weithg sample

Ru: area residual solvents in sample

Rs: area residual solvents in standard

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

I am going to need more information in order to move forward with this...

Where exactly are you running into issues? Are you able to post screenshots of how you are attempting to set up the calculation in your intelligent report? The concentrations/amounts of the compounds in your samples and standards should be getting calculated the compounds have valid calibration curves saved in your method.

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

It is tough for me to tell whether expression you are using to display the concentration of your compounds on your report is correct as your EZChrom is in a different language.

You showed in a screenshot that you have your compounds entered into your method's peak table, but I cannot determine from your screenshots whether or not these compounds have valid calibration curves. If you click on 'Review Calibration' do you see calibration curves for all of your compounds?

It might be best to contact your local Agilent support so that there is not a language barrier: Contact Us | Agilent

• ###### Re: Residual Solvents In Software OpenLab Ezchrom Version A 04.07

As it has been over a month since your last reply I marked this post as "Assumed Answered". Please let us know if you need any further help and we can pick up from there. If you were able to find a solution already, it would be appreciated if you could come back and reply with the Correct Answer.