{"id":2733,"date":"2022-12-25T08:17:16","date_gmt":"2022-12-25T14:17:16","guid":{"rendered":"https:\/\/kermitmurray.com\/msblog\/?page_id=2733"},"modified":"2022-12-25T09:55:44","modified_gmt":"2022-12-25T15:55:44","slug":"reddit-r-analyticalchemistry","status":"publish","type":"page","link":"https:\/\/kermitmurray.com\/msblog\/links\/social-feeds\/reddit-feeds\/reddit-r-analyticalchemistry\/","title":{"rendered":"Reddit r\/analyticalchemistry"},"content":{"rendered":"\n<div class=\"wp-block-caxton-grid relative\"><div class=\"absolute absolute--fill\"><div class=\"absolute absolute--fill cover bg-center\" style=\"background-color:;background-image:linear-gradient( );\"><\/div><div class=\"absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );opacity:1;\"><\/div><\/div><div class=\"relative caxton-columns caxton-grid-block\" style=\"padding-top:0;padding-left:0;padding-bottom:0;padding-right:0;grid-template-columns:repeat(12, 1fr)\" data-tablet-css=\"padding-left:em;padding-right:em;\" data-mobile-css=\"padding-left:em;padding-right:em;\">\n<div class=\"wp-block-caxton-section relative\" style=\"grid-area:span 1\/span 8\"><div class=\"absolute absolute--fill\"><div class=\"absolute absolute--fill cover bg-center\" style=\"background-color:;background-image:linear-gradient( );\"><\/div><div class=\"absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );opacity:1;\"><\/div><\/div><div class=\"relative caxton-section-block\" style=\"padding-top:5px;padding-left:5px;padding-bottom:5px;padding-right:5px\" data-mobile-css=\"padding-left:1em;padding-right:1em;\" data-tablet-css=\"padding-left:1em;padding-right:1em;\">\n<p><a href=\"https:\/\/www.reddit.com\/r\/analyticalchemistry\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>\/r\/analyticalchemistry\/<\/strong><\/a><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-caxton-section relative\" style=\"grid-area:span 1\/span 4\"><div class=\"absolute absolute--fill\"><div class=\"absolute absolute--fill cover bg-center\" style=\"background-color:;background-image:linear-gradient( );\"><\/div><div class=\"absolute absolute--fill\" style=\"background-color:;background-image:linear-gradient( );opacity:1;\"><\/div><\/div><div class=\"relative caxton-section-block\" style=\"padding-top:5px;padding-left:5px;padding-bottom:5px;padding-right:5px\" data-mobile-css=\"padding-left:1em;padding-right:1em;\" data-tablet-css=\"padding-left:1em;padding-right:1em;\">\n<p><strong><a href=\"https:\/\/www.reddit.com\/r\/analyticalchemistry.rss\" target=\"_blank\" rel=\"noreferrer noopener\">RSS<\/a><\/strong><\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n<ul class=\"has-dates has-authors has-excerpts wp-block-rss\"><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1tf89ym\/clearance_device_analytical_standards\/'>Clearance Device Analytical Standards<\/a><\/div><time datetime=\"2026-05-16T23:01:43-05:00\" class=\"wp-block-rss__item-publish-date\">May 16, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/Naive-Assumption8706<\/span><div class=\"wp-block-rss__item-excerpt\">submitted by \/u\/Naive-Assumption8706 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1t9z4c0\/lgc_chemicals_trc_logical_reliability\/'>LGC Chemicals (TRC, LoGiCal, &#8230;) Reliability<\/a><\/div><time datetime=\"2026-05-11T10:21:16-05:00\" class=\"wp-block-rss__item-publish-date\">May 11, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/formanz<\/span><div class=\"wp-block-rss__item-excerpt\">Hi everyone, we would like to buy some standards of synthetic cannabinoids and NSOs, but Cayman is quite expensive for us (at least for now). Do anyone have experience with LGC Chemicals distributor and brands like TRC or LoGiCal (sold by LGC)? Any comments will be appreciated, thank you! Have a nice day! submitted by \/u\/formanz [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1t6g8yi\/need_help_with_quantitative_analysis\/'>Need help with quantitative Analysis<\/a><\/div><time datetime=\"2026-05-07T16:51:06-05:00\" class=\"wp-block-rss__item-publish-date\">May 7, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/Heiduk00<\/span><div class=\"wp-block-rss__item-excerpt\">submitted by \/u\/Heiduk00 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1t5edut\/edtafe_complex_in_the_stability_of_ascorbic_acid\/'>EDTA-Fe complex in the stability of ascorbic acid<\/a><\/div><time datetime=\"2026-05-06T14:21:39-05:00\" class=\"wp-block-rss__item-publish-date\">May 6, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/ForwardDaikon6761<\/span><div class=\"wp-block-rss__item-excerpt\">Hi, I have a question about the stability of ascorbic acid in a 0.1% H3PO4 solution. The solution has a concentration of 0.02 mg\/mL. Over the course of a few hours, the ascorbate peak drops (RSD% = 3%). If I add an EDTA-Fe complex to the standard solution, the degradation stops or at least decreases dramatically. However, I&#039;m not clear on the mechanism. Could someone explain it to me? submitted by \/u\/ForwardDaikon6761 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1t0p5fb\/hplc_column_efficiency_and_resolution\/'>HPLC column efficiency and resolution<\/a><\/div><time datetime=\"2026-05-01T10:06:55-05:00\" class=\"wp-block-rss__item-publish-date\">May 1, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/peniabipole<\/span><div class=\"wp-block-rss__item-excerpt\">I want to calculate HPLC column efficiency and resolution based on the our lab experimental results, but I\u2019m not sure which data I should use. We have 5 different standards and 1 sample, and for each standard there are 3 measurements. For example, if I choose the 1st standard (the lowest concentration), should I use the average of the 3 measurements or ? Also, which standard should I use for best? submitted by \/u\/peniabipole [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1syu72y\/acidbased_des_vs_conventional_solvents_any\/'>Acid-based DES vs conventional solvents : any practical experience?<\/a><\/div><time datetime=\"2026-04-29T09:52:05-05:00\" class=\"wp-block-rss__item-publish-date\">April 29, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/Apacukafundaluka12<\/span><div class=\"wp-block-rss__item-excerpt\">Hi everyone, I\u2019m currently experimenting with deep eutectic solvents (DES), mainly acid-based systems where one of the components is an organic acid. So far, I haven\u2019t had much success..in most cases, simple solvents like methanol or ethanol seem to outperform my DES mixtures in terms of extraction efficiency. I\u2019ve been working primarily with wood samples, but I\u2019m considering switching to other plant matrices to see if the results improve. Does anyone here have experience with DES in similar applications? I\u2019d really appreciate hearing about your insights, tips, or even negative results. anything that could help me better understand what I [&hellip;]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1sytnyb\/frit_inversion_of_hplc\/'>Frit inversion of HPLC<\/a><\/div><time datetime=\"2026-04-29T09:20:59-05:00\" class=\"wp-block-rss__item-publish-date\">April 29, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/ForwardDaikon6761<\/span><div class=\"wp-block-rss__item-excerpt\">Hi, is it possible to invert the input frit of an HPLC column with the output frit? submitted by \/u\/ForwardDaikon6761 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1sx2okb\/fluctuating_pressuresin_hplc_and_loss_of\/'>Fluctuating pressuresin HPLC and loss of resolution in HPLC<\/a><\/div><time datetime=\"2026-04-27T12:48:33-05:00\" class=\"wp-block-rss__item-publish-date\">April 27, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/ForwardDaikon6761<\/span><div class=\"wp-block-rss__item-excerpt\">submitted by \/u\/ForwardDaikon6761 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1spuyal\/guesses_on_the_6545xts_remaining_lifecycle\/'>Guesses on the 6545XT&#039;s remaining lifecycle?<\/a><\/div><time datetime=\"2026-04-19T14:47:03-05:00\" class=\"wp-block-rss__item-publish-date\">April 19, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/TheProudCanadian<\/span><div class=\"wp-block-rss__item-excerpt\">I have been pitching an investment in a hi-res LCMS for my facility for the past few months. Agilents 6545XT is a frontrunner for our intended applications, but we&#039;re also considering the Revident as a more future-proofed option. I am aware there has been no official announcement of a successor to the XT, but what does the community here think about how many years are left before this happens? Edit: should mention we&#039;re looking at H1 2027 purchase so whatever lifetime the XT has today, subtract 1 year from that. submitted by \/u\/TheProudCanadian [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1sm9iaz\/pfas_in_drinking_water\/'>PFAS in drinking water !?<\/a><\/div><time datetime=\"2026-04-15T15:33:19-05:00\" class=\"wp-block-rss__item-publish-date\">April 15, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/alchemicdpak<\/span><div class=\"wp-block-rss__item-excerpt\">submitted by \/u\/alchemicdpak [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1skc9iz\/sample_stuck_in_xcalibur_sequence\/'>Sample Stuck in Xcalibur Sequence<\/a><\/div><time datetime=\"2026-04-13T14:20:40-05:00\" class=\"wp-block-rss__item-publish-date\">April 13, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/Training-Resist-2745<\/span><div class=\"wp-block-rss__item-excerpt\">submitted by \/u\/Training-Resist-2745 [link] [comments]<\/div><\/li><li class='wp-block-rss__item'><div class='wp-block-rss__item-title'><a href='https:\/\/www.reddit.com\/r\/analyticalchemistry\/comments\/1shlymp\/classical_piston_pipetting_vs_pressureoverliquid\/'>Classical piston pipetting vs pressure-over-liquid pipetting \u2013 which would you choose?<\/a><\/div><time datetime=\"2026-04-10T13:03:51-05:00\" class=\"wp-block-rss__item-publish-date\">April 10, 2026<\/time> <span class=\"wp-block-rss__item-author\">by \/u\/Federal-Scratch-2500<\/span><div class=\"wp-block-rss__item-excerpt\">1. Classical piston-based pipetting Uses a mechanically driven piston or syringe. Liquid is aspirated and dispensed through displacement, with the piston creating vacuum and pressure to control volume. 2. Pressure-over-liquid pipetting Uses controlled air pressure and vacuum on a liquid reservoir. Vacuum pulls liquid in, pressure pushes it out\u2014no mechanical displacement, flow is controlled indirectly via air and valves. If you had to choose for your system, how would you compare them in terms of: Precision Repeatability Cost Endurance Maintenance Flexibility Speed \ud83d\udc49 Which one would you go with \u2014 and what\u2019s the biggest trade-off in your experience? Also curious: [&hellip;]<\/div><\/li><\/ul>\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">Related Feeds<\/h4>\n\n\n<ul class=\"su-siblings\"><li class=\"page_item page-item-2707\"><a href=\"https:\/\/kermitmurray.com\/msblog\/links\/social-feeds\/reddit-feeds\/reddit-r-genomics\/\">Reddit r\/genomics<\/a><\/li>\n<li class=\"page_item page-item-2473\"><a href=\"https:\/\/kermitmurray.com\/msblog\/links\/social-feeds\/reddit-feeds\/reddit-r-massspectrometry\/\">Reddit r\/massspectrometry<\/a><\/li>\n<li class=\"page_item page-item-2705\"><a href=\"https:\/\/kermitmurray.com\/msblog\/links\/social-feeds\/reddit-feeds\/reddit-r-metabolomics\/\">Reddit r\/metabolomics<\/a><\/li>\n<li class=\"page_item page-item-2499\"><a href=\"https:\/\/kermitmurray.com\/msblog\/links\/social-feeds\/reddit-feeds\/reddit-r-proteomics\/\">Reddit r\/proteomics<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Related Feeds<\/p>\n","protected":false},"author":1,"featured_media":2498,"parent":2738,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-2733","page","type-page","status-publish","has-post-thumbnail","hentry","entry"],"_links":{"self":[{"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/pages\/2733","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/comments?post=2733"}],"version-history":[{"count":3,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/pages\/2733\/revisions"}],"predecessor-version":[{"id":2747,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/pages\/2733\/revisions\/2747"}],"up":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/pages\/2738"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/media\/2498"}],"wp:attachment":[{"href":"https:\/\/kermitmurray.com\/msblog\/wp-json\/wp\/v2\/media?parent=2733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}