- by /u/Aware_Job_6879I'm developing an LC-MS/MS method using my own urine as the matrix. To ensure consistency, what are the best practices for hydration, collection timing (e.g., first-morning vs. spot), and pooling samples? Should I characterize the pool (e.g., creatinine, pH)? Any key tips, pitfalls to avoid, or texts to read would be appreciated. Thank in advance! submitted by /u/Aware_Job_6879 [link] [comments]
- by /u/raichgreensubmitted by /u/raichgreen [link] [comments]
- by /u/Alarming_Advisor_118Looking for Trientine NDSRI LCMS Method can somebody help? submitted by /u/Alarming_Advisor_118 [link] [comments]
- by /u/Apacukafundaluka12In analytical chemistry, I often see research topics described as ādevelopment of new procedures.ā What does this typically mean in practice? Is it about designing completely new analytical methods, or is it more about optimizing and modifying existing ones (e.g., greener solvents, miniaturized extraction, new sample preparation workflows)? Iād love to hear examples from people who have worked on such projects. submitted by /u/Apacukafundaluka12 [link] [comments]
- by /u/Afsh31Kindly name the instrumental analytical techniques that are used for qualitative purposes mostly ? I can think of FTIR thatās mostly used for qualitative purpose .. please tell what are other instruments/techniques used majorly for qualitative testing. Tysm Edit: If you're not sure about the answer, it's best to refrain from responding or simply ignore this post. The answer isn't readily available on ChatGPT because this is more of a practical, lab-based question rather than a purely theoretical one. I have given you the example of FTIR. While FTIR can theoretically be used for both qualitative and quantitative analysis, in […]
- by /u/Rapid-diamondI am in the process of calculating uncertainty involved in the determination of Cu by AAS. I need the following uncertainty parameters, spectrometer stability, baseline stability, repeatability, which is supposed to be available from the instrument manufacturer. From a technical specification document, I found that ''Performance: >0.95Abs with precession of submitted by
- by /u/PFAS123I have a PhD in analytical chemistry and have been working in the pharmaceutical company. I am looking for a remote job. I have 2+ years of experience. I have used Mass Spec from every vendor possible for targeted and untargeted small molecules and proteomics. Any help or suggestions will be helpful. submitted by /u/PFAS123 [link] [comments]
- by /u/Difficult_Emu6150Iām starting my junior year (but technically Iāll be starting my sophomore year)this fall and wanted to know about industry and research internships. Iām currently working in an analytical lab and have work experience with glow discharge (the entire setup with the Rf generator, oscilloscope, cmos cameras), Micro-droplet printers etc. I have also worked extensively on motorized stage especially the coding aspect of it to automate the printing of the droplets. I also have some background with andor and matlab. I want maybe an internship or atleast something to look forward to. Do Pharma companies even hire intern? (Iām down […]
- by /u/WahWashSo full disclaimer – I'm not a chemist. My wife and I own a tiny fragrance company. We won a 6890/5973N at auction for 3000 bucks from Virginia Dept. Of Forensic Science and with a lot of blood, sweat, and service manuals have had it up and running beautifully in our basement "lab" for the past year. Total cost, including foreline pump, gas, consumables, column, was about $6k. That even includes the Hi-vac board on the MS that violently failed about 6 months in. Everything comes from EBay and Restek because Agilent won't even do business with us. Needless to […]
- by /u/koolbijacksubmitted by /u/koolbijack [link] [comments]
- by /u/SyntqxI recently tried to digest Si with HBF4 (38%). The reason for this approach is that i want to get away form an Sodiumhydroxide/nitric acid digestion. The results were kind of underwhelming. Silicon residue and some Silicondioxide forming on the edge of the reaction vessel. Do you guys have any idea what I could change for a better result? submitted by /u/Syntqx [link] [comments]
- by /u/Amazing_Life1333Hi everyoneāsoftware dev here kicking around a micro-SaaS called TgFinder: a browser tool that ingests raw DSC exports from any vendor (TA .csv, NETZSCH .asc, Mettler .txt), auto-smooths the trace, applies ASTM E1356 baseline correction, pinpoints onset/midpoint/inflection Tg even when cold-crystallisation or melt peaks clutter the curve, shows an interactive Plotly graph, and spits out a neat one-page PDF for QA records; with a free academic tier (watermarked PDFs), a US$29/mo Pro tier. Before I sink months into it, Iād love brutal feedback: is manual Tg picking painful and frequent enough that youād pay for a vendor-agnostic solution, or are […]
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