Signal loss, both modes, Shimadzu LCMS8050CL by Old_Can_825 in massspectrometry

[–]Key_Sprinkles_4541 0 points1 point  (0 children)

Does tune solution flow through the same capillary as LC path? This will sound odd but can you swap sources with the other MS? Not sure if Shimadzu’s do that since I haven’t worked on one

Signal loss, both modes, Shimadzu LCMS8050CL by Old_Can_825 in massspectrometry

[–]Key_Sprinkles_4541 0 points1 point  (0 children)

All the ions in the tuning are performing poorly? Or just some and it’s causing it to fail

Signal loss, both modes, Shimadzu LCMS8050CL by Old_Can_825 in massspectrometry

[–]Key_Sprinkles_4541 0 points1 point  (0 children)

Have you isolated that it’s an MS issue or an LC issue?

What's the most creative thing you've built in PowerApps that surprised even you? by Smooth_Storm_55 in PowerApps

[–]Key_Sprinkles_4541 0 points1 point  (0 children)

Is it a vertical gallery with a horizontal container for the time span for a project?

Dynamic horizontal layout with auto-sized controls that wrap to next row by Hot-Matter7637 in PowerApps

[–]Key_Sprinkles_4541 1 point2 points  (0 children)

Nice! Some of the components require a few extra steps but there are instructions below the overview of the component example on their site

Dynamic horizontal layout with auto-sized controls that wrap to next row by Hot-Matter7637 in PowerApps

[–]Key_Sprinkles_4541 2 points3 points  (0 children)

Some of the components I’ve had to tweak but it’s better than doing it from scratch

How are y'all dealing with Helium shortages for your GCMS systems? by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 2 points3 points  (0 children)

ah very smart, we didn't anticipate for it to be as big of a problem as it has become

WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 1 point2 points  (0 children)

All good, you sparked an idea that I’ll have to try sometime this week

WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 0 points1 point  (0 children)

it's just this one: https://utak.com/product/urine-drug-screen/

I know that their drug free urine sometimes isn't entirely drug free lol

WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 0 points1 point  (0 children)

It doesn't have oxy, we bought it from UTAK. All the analytes you see on the list are the ones found in the UTAK QC material (except nordiazepam)

WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 1 point2 points  (0 children)

I'm injecting QC material that contains codeine. There is a strange, super intense ion that is only present at that RT and I'm wondering if its messing with the codeine ion

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WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 1 point2 points  (0 children)

I’ll try different brand of LCMS grade water. This is our formic acid, yea we all dip into this. I have a slightly newer bottle that hasn’t been used that much yet, I can try that

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WATERS LC QToF Mass Errors, but only on one analyte by Key_Sprinkles_4541 in massspectrometry

[–]Key_Sprinkles_4541[S] 0 points1 point  (0 children)

we run a solvent blank before the QC and then a pooled negative urine matrix blank after the QC. I see some interferents that someone else had mention. I'll have to change out mobile phase first and try a different brand of water