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calibration using sum of peak areas vs concentration
Hi,
Source optimization
Hello. I am setting up a new development method for analyzing toxic chemicals.
Understanding technical debt: the hidden cost of ignoring problems
In today’s rapidly evolving technological landscape, businesses heavily rely on software and IT systems to drive their operations. However, the pursuit of efficiency and speed often leads to the accumulation of what is known as technical debt. Technical debt refers to the implied cost incurred when businesses choose quick but limited solutions over better approaches that may take more time to implement. This blog post will delve into the concept of technical debt, its implications for businesses and how to avoid falling victim to its detrimental effects.
Reporting only unknown samples containing a specific sample ID prefix (in this case Sample ID prefix = PHT)
I am using Multiquant software and I am trying to create a report to pull data on specific sample from a large run.
Selecting the right system for metabolite identification
So, you need a new liquid chromatography-mass spectrometry (LC-MS) system for your metabolite identification (metID) studies, and you are not sure which option is right for you. This blog provides an overview of the metID solutions offered by SCIEX, so you can make the best decision for your organization.
Baseline Dip using PA800 Plus SDS-MW Application
We’ve noticed that with some gel buffer lots, we see a dip in the baseline at 280 nm when analyzing proteins per the SDS-MW protocol. Has anyone experienced this before? We don’t always see it and are wondering what causes the dip.
Please provide at least 3 decimal places for expected retention time for scheduled MRM at EchoMS
Expected retention time for scheduled MRM at EchoMS must have at least 3 decimal places, because the minute display with two decimal places is insufficient to show the difference in seconds. Thank you.
Standard peaks are noisy
I am Using Sciex Qtrap 4500 for quantification of nitrosamines (NDMA&NDBA). I am facing issue with higher baseline intensity. When developed the method in APCI the basline was at about 5e4. but now even after cleaning the source (i.e. Changed capillary to new, Curtain plate & Corona needle cleaning, given blank injection overnight ), my base line decreased from 1e6 to 4 e5, but settled at 4 e5 from past 24 hours. can you suggest me how decrease my baseline intensity further to below 1e5. My standard peaks are like noise now.
Loss the contact closure signal
our 7600 couple with nanoLC Ultimate 3000 via contact closure. it has run without any loss connection during the batch. Just yesterday, the last injection keep equilibrating system until the LC finished the gradient run. We closed the software and power off LC and MS then started again but it did not help. The Dionex engineer also checked their LC and triggerring cable found both are ok.
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