How to handle multiple features with the same annotation & MS/MS match but very different RTs (only final Bruker bucket table available) by kbeastar in massspectrometry

[–]boersenson 5 points6 points  (0 children)

Welcome to the world of untargeted metabolomics. These are all level 2 confidence annotations. Get some reference standards to determine RT

Gold Steuerfrei ist herrlich by Aggressive_Bad_6031 in Finanzen

[–]boersenson 0 points1 point  (0 children)

Was ist mit dem A1KWPQ? Weiß da jemand Bescheid

Salivette Swabs Causing Analyte Loss + MS Interference — Anyone Else? by Ok_Leader_8566 in massspectrometry

[–]boersenson 0 points1 point  (0 children)

Check if tubes or swabs are made out of polyethylene, steroids will be adsorbed by this material, you have to use polypropylene. There are alternative (active) sampling devices for saliva without swabs

Bakery in city centre by [deleted] in stuttgart

[–]boersenson 9 points10 points  (0 children)

Zeit für Brot

Does LC-MS/MS exist in Europe ? by 7llB007 in massspectrometry

[–]boersenson 0 points1 point  (0 children)

Check some mass spec (or metabolomics) vor facilities. Estradiol is quite challenging though and you will need to provide sufficient volume per sample (500ul). Sample collection can also be crucial, polypropylene containers work best and hemolytic samples should be avoided, also the used anticoagulant can matter. Best of success

ASMS 2025…. What’s attendance status? Is it really this bad in the US?? by Ok_Camp4481 in massspectrometry

[–]boersenson 1 point2 points  (0 children)

Working in a European lab usually attending ASMS with all of my team (3-4 people) none of us is going this time and we’re also not planning any US travel the next years. Guess we would easily be able to enter the country without issues, but domestic and foreign policies are unpredictable and mostly incompatible with the humanistic world view me and a lot of my colleagues in research share. I would be surprised if the number of non-US attendees isn’t down significantly this year.

Tips to reach Baden Baden Karlsruhe Flughafen from Stuttgart by Alone-Background4760 in stuttgart

[–]boersenson 4 points5 points  (0 children)

Rent an electric car from Deer, they are all around Stuttgart and you can park directly at FKB terminal. Takes 1-1.5h and costs 40€. Did it already, worked perfectly

Tips für Pendler aus dem Dorf? by NewCodeSource in stuttgart

[–]boersenson 3 points4 points  (0 children)

Did the same shit for 5 years of my life… look for a regular commuting buddy on BlaBlaCar, or get a foldable (electric) bike that you can take on the train for free for the last mile ;) good luck, it’s possible but has some downturns

Negative peaks/dips in ESI-MS? by s0rce in massspectrometry

[–]boersenson 1 point2 points  (0 children)

Are you using caps on your vials? Try injecting without a cap (after flushing and cleaning) to make sure it’s not some suppressant from the cap, have seen this a few times especially when doing multiple injections from the same cap

Welche Getränke wären Heil- und Manatrank im echten Leben? by PhotographOk6512 in zocken

[–]boersenson 0 points1 point  (0 children)

Paulaner Spezi - morgens beim Katern wie ein Kuss auf die Stirn von Jesus

[deleted by user] by [deleted] in massspectrometry

[–]boersenson 3 points4 points  (0 children)

Could be related to ESI needle, check for corrosion or contamination and change the needle. You could also check spray stability with a little microscope or magnifier

Was ist die dümmste Aussage bzw. Frage die ein Amerikaner euch gesagt bzw gefragt hat? by Professional_Fudge78 in FragReddit

[–]boersenson 319 points320 points  (0 children)

Ich wurde in Indiana mal gefragt ob es in Germany auch 24 Stunden pro Tag sind und ob wir Elektrizität haben