- by /u/Miserable_Fee1506submitted by /u/Miserable_Fee1506 [link] [comments]
- by /u/Main-Fly1698Our Sciex 3200 was running normally and experienced a power failure that tripped the breaker on the UPS in the middle of the night. The event log just has the following entry at the time the power failure occurred: [SyncMan] File=.\Commands.cpp, Line=1223, ERROR: Device fault detected in Mass Spectrometer:3200n Q TRAP:0: When turning the MS on now some of the components do seem to power on but the status lights are off as well as most of the other components. It's an old MS that is obsolete at this point so servicing it is in question. Before getting it serviced […]
- by /u/OV3R9KHi everyone I've been facing internal standard drift up on the Agilent ICPMS 7800, specifically on Tellurium. Response is good on all solutions where there are no dissolved solids (cal standards, ICB, CCB etc) however, as soon as it starts analysing samples, Te shoots up and doesn't recover. Things I've done so far: Checked and changed all tubing Cleaned nebulizer (done daily) Replaced spray chamber Inspected torch, bonnet and shield Replaced dilution tube Replaced ISIS valve Cleaned cones (sonicated and conditioned with 50ppm Ca and then 1% HNO3) New internal standard Our istd for this method is 2%HCL and 0.5% […]
- by /u/Felora_Labssubmitted by /u/Felora_Labs [link] [comments]
- by /u/momma_tired_23Hi all- I’m a 6 year toxicology gal having some LCMS Issues. Currently I have 10ish clients experiencing an issue with 3 main analytes (sertraline, Amitriptyline, and Cyclobenzaprine). I make master cal and qc stocks in house that are lot numbered and used for both the calibration curve and QC. However, the cal curve will be perfect for these analytes and the QC will be 200-350% accuracy. No contamination present in my blanks. I can inject cals as unknowns in the batch and get perfect values. My calibrators 2 and 5 are the same conc as my qc low and […]
- by /u/Sea-Associate4151I'm a 3rd year Bachelor's Data Science student and I've been working on a python installable package for analyzing and later correcting batch effects in Mass Spectrometry Proteomics datasets. The main aim was to make a streamlined tool for analyzing, diagnosing and correcting batch effects with auditable data pipeline preserving each state with a reusable QC metric pipeline on each stage of the data. My exposure to this domain is strictly narrow so I needed input from the community about my tool. The data pipeline and modules are built around a ROSMAP/BANNER TMT FragPipe data and I unfortunately don't know […]
- by /u/Conscious_Switch9856Hoping to get more positive traction in the job search for LC-MS scientist with over 20 years MS vendor experience. Thank you! submitted by /u/Conscious_Switch9856 [link] [comments]
- by /u/spud_potatoI know that glassware is preferred but lots of papers work with polypropylene tubes. So theoretically would the eppendorph lo-bind tubes be sufficient enough to not let MTBE leach through the plastic? And so are the pipette tips? I don't want to wait until I could order glassware and a centrifuge that can centrifuge glass. Thanks! submitted by /u/spud_potato [link] [comments]
- by /u/tmcwc123I've always used UHP 5.0 (99.999%) helium for GCMS and not thought twice about it. I'm in a new lab space and they're running "Industrial Grade" helium, but no specification provided on purity. I am inclined to swap the tank to UHP because I think it may be cause for some issues but thought I'd check with the hive mind. Anyone use that grade and get away with it? Does Industrial Grade have a universal spec? submitted by /u/tmcwc123 [link] [comments]
- by /u/Few-Carpenter6698Not entirely sure where to post this, but saw some others here talking about using a CS datalogger and figured I would reach out here. I'm a student currently getting our micro climate sensors coded for a CR350 datalogger from Campbell Scientific. Our UVA and UVB sensors are from Skye Instruments (who closed their business back in August). I am having such a hard time getting the coding built for them. Everytime I get it straightened out, I got to retest it and get the NAN code tossed back at me. I have used both the SE and Differential Voltage […]
- OpenLIMS — open-source, self-hosted LIMS with sequencing, BLAST, mass spec, and lab workflow supportby /u/Mokey925submitted by /u/Mokey925 [link] [comments]
- by /u/androgynously_mixedHi guys I badly need help, anyone working in the lab that has this type of density meter??? I want to ask the size of the locking screw and can you also comment the picture or you can dm me. Im looking for replacements i might just 3d print it but i dont have any references even i did thoroughly searched in the internet. Im really overthinking and i hope you guys can help me. Thank you so much and God bless. Please everyoneeeee huhu submitted by /u/androgynously_mixed [link] [comments]
Mass spectrometry websites, social media, journal feeds, and other links and items of interest to the mass spectrometry community.
