- by /u/Infernalpain92Does anyone have a good suggestion for a cheap way to compare colors? Better would be measuring them but I’ve only a small budget. So no fancy color meters. I have a UV VIS but the samples are not transparent. Think comparing paints on a substrate. If you’re curious it’s the color of self tanner on skin. Or a skin substitute. But I don’t know how I should compare them. I thought via photographs. But it would be nicer if I could find a way to get a number to do statistics. Thx for the help!! submitted by /u/Infernalpain92 [link] […]
- by /u/Giulia5593Is KF titration suitable for water loss determination in a stability study of an injectable pharmaceutical? I know it’s routinely used to determine water content in powders but is it also suitable for acqueous solutions? submitted by /u/Giulia5593 [link] [comments]
- by /u/IndependentBass3518We are Crystal Scientific, and for the past 20 years, we have been a trusted supplier of crystals and mirrors to major synchrotrons. Additionally, over the past 5 years we have been a trusted supplier of low background silicon sample holders to Bruker and Malvern Panalytical. We are now expanding into the wider XRD powder diffraction market, offering silicon low-background discs for powder diffraction direct to users worldwide. As an in house manufacturer, we are able to produce the silicon sample holders in full and therefore can guarantee we can offer better prices than existing third part distributors, whilst offering […]
- by /u/Individual_Gear_5269I’m working with semiconductor parts that have a Y₂O₃ plasma coating and are tested for particles using an ultrasonicated water tank. The process involves: Extensive spray rinsing with UPW (ultra-pure water) before testing. 10-minute sonication in water, after which the water is tested for particles. Despite thorough pre-rinse, the parts keep failing particle testing. I suspect that the plasma coating might be porous, trapping particles that are later released during sonication. Can anyone help to confirm/deny this suspicion or offer another theory? submitted by /u/Individual_Gear_5269 [link] [comments]
- by /u/GreenCurrent6807We're currently having issues with my HPLC at work and I'm hoping this group might have insights on potential causes. My technician has reversed the column and flushed with mobile phase but this doesn't seem to have solved the issue. I have attached photos of calibration standard runs (red is old and correct, blue is the current results). submitted by /u/GreenCurrent6807 [link] [comments]
- by /u/LikeithereperiodHow underpaid am I, and how much should I be asking? 4 years post-PhD industry experience and live in OH. submitted by /u/Likeithereperiod [link] [comments]
- by /u/WeStraightVibinsubmitted by /u/WeStraightVibin [link] [comments]
- by /u/WeStraightVibinsubmitted by /u/WeStraightVibin [link] [comments]
- by /u/GuyknubzNow I’m a third years chemistry major student. I’m taking some courses of master’s degree. Please recommend some textbooks that deeply teach on Sample preparation for chemical analysis, such as calibration curves comparisons, mass transfers, QuEChERS, micro-extraction, and etc. (principles of Instrumental analysis by skoog doesn’t have these) submitted by /u/Guyknubz [link] [comments]
- by /u/Coiler93In the school where I work I have a Varian 5000 Vista Series HPLC system, and since it is still working, I kindly ask if there is a possibility of finding the manual for the system. Thanks in advance (I also write to Agilent but maybe someone here can also have it or tell me where can i find it). submitted by /u/Coiler93 [link] [comments]
- by /u/thepatterninchaosSomeone wants me to round to whole numbers. I just want to use what OpenLab CDS gave out! 3 d.p. – We can round at the final stage after calcs! submitted by /u/thepatterninchaos [link] [comments]
- by /u/Significant_Share_69I used to submitted by /u/Significant_Share_69 [link] [comments]
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