Liquid Chromatography

Forum	Topics	Posts	Last post
Ion Chromatography Discussions about IC and related topics Topics: 403	403	1508	Last post Large water dip on ICS-6000 by NitroJennAtom Wed Jun 17, 2026 3:20 pm
Capillary Electrophoresis Discussions about CE, MEKC and related topics Topics: 52	52	110	Last post Re: Sudden Unknown Peak Durin… by Multidimensional Fri Aug 01, 2025 3:47 pm
GPC/GFC/SEC Discussions about gel permeation chromatography / gel filtration chromatography / size exclusion chromatography Topics: 120	120	469	Last post Re: High-temp filtration of c… by DR Tue Jan 06, 2026 5:42 pm

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11923 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	125219	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Is it possible for non-retained compounds to elute before V0 by Mike H. » Thu Mar 31, 2011 7:22 pm	2	2028	Last post by Mike H. Fri Apr 01, 2011 4:40 pm
DI ISOPROPYL ETHER ICH LIMIT by vrcr » Fri Apr 01, 2011 10:00 am	1	4891	Last post by krickos Fri Apr 01, 2011 10:51 am
Using ion pairing at 229nm by Mike H. » Mon Mar 28, 2011 4:33 pm	9	3016	Last post by Mike H. Wed Mar 30, 2011 7:54 pm
HP 1090 leak shutdown by faris » Wed Mar 30, 2011 1:36 pm	1	1537	Last post by Consumer Products Guy Wed Mar 30, 2011 6:48 pm
auto Injector_linearity by mohammad » Wed Mar 30, 2011 7:18 am	2	1535	Last post by tom jupille Wed Mar 30, 2011 3:52 pm
how do I got a good IC column? by wsj365 » Tue Mar 22, 2011 12:25 pm	3	1834	Last post by wsj365 Wed Mar 30, 2011 2:57 pm
Best column to separate bromo and chloro analogs? by Klah » Tue Mar 29, 2011 7:57 pm	1	1688	Last post by juddc Tue Mar 29, 2011 8:54 pm
injection volume is changing the chromatography by R&D-Chemist » Tue Mar 29, 2011 4:21 pm	4	2293	Last post by R&D-Chemist Tue Mar 29, 2011 8:23 pm
R2 vaue by calibration curve by praveenpaliwal » Mon Mar 28, 2011 7:43 pm	5	2882	Last post by JGK Tue Mar 29, 2011 7:05 pm
wavelength dependence of UV detector RI response by tom jupille » Fri Mar 25, 2011 4:45 pm	5	2241	Last post by tom jupille Tue Mar 29, 2011 3:28 pm
what make same Uv detector different ? by Newchromatographer » Tue Mar 29, 2011 3:04 pm	6	3871	Last post by Newchromatographer Fri Apr 08, 2011 2:23 pm
THF for GPC by push » Thu Mar 10, 2011 7:37 pm	4	3819	Last post by gstaepels Tue Mar 29, 2011 9:12 am
Cleaning column with 6M Urea and IPA by cchan_21 » Fri Feb 11, 2011 2:41 pm	4	2881	Last post by HW Mueller Tue Mar 29, 2011 8:10 am
High and Low pH MP on same LC by LabChick » Mon Mar 28, 2011 2:49 pm	3	2190	Last post by LabChick Mon Mar 28, 2011 7:54 pm
HPLC problems by amro tarek » Mon Mar 28, 2011 7:03 pm	1	1792	Last post by tom jupille Mon Mar 28, 2011 7:13 pm
UV-stablizer with HPLC-ELSD by Dana » Mon Mar 28, 2011 9:20 am	9	5378	Last post by Dana Fri Apr 01, 2011 8:20 am
precaution for usgae at pH 9?? by rick1112 » Fri Mar 25, 2011 4:18 am	3	2405	Last post by bisnettrj2 Mon Mar 28, 2011 5:49 am
TFA vs HFBA by grumbledook » Tue Mar 15, 2011 9:53 pm	7	7178	Last post by DJ Sun Mar 27, 2011 10:04 pm
sugar profile with Dionex or HPLC-RI by agi1124 » Sun Feb 13, 2011 11:14 am	7	3894	Last post by WillyOne Sat Mar 26, 2011 8:15 pm
Phytosterol Seaparation using reverse phase HPLC by hifly19 » Wed Feb 23, 2011 5:35 am	9	2926	Last post by WillyOne Sat Mar 26, 2011 8:02 pm
ICS 3000 by aqawwas » Sat Mar 26, 2011 12:15 pm	2	3352	Last post by aqawwas Sat Apr 02, 2011 11:34 am
how to get rid of oleic acid oil peaks? urgent! by kwfx » Tue Feb 01, 2011 5:17 am	12	3725	Last post by ym3142 Fri Mar 25, 2011 6:17 pm
Why does my baseline drop? by Mike H. » Wed Mar 23, 2011 4:19 pm	18	7786	Last post by Gilson_PLC2020 Fri Mar 25, 2011 4:47 pm
Air issues by floguigui » Tue Mar 22, 2011 9:40 am	5	1926	Last post by floguigui Fri Mar 25, 2011 12:14 pm
Y-intercept of the std curve by Biopharmchat » Tue Mar 22, 2011 9:26 pm	6	5115	Last post by lmh Fri Mar 25, 2011 10:26 am
Aqueous Normal Phase with mobile phase 100% buffer by AMH » Tue Mar 22, 2011 12:30 pm	5	2270	Last post by carls Fri Mar 25, 2011 3:50 am
Determining the isocratic void using a short column by IsotopeC12 » Fri Mar 25, 2011 1:18 am	1	1565	Last post by carls Fri Mar 25, 2011 3:37 am
Potency in QC lab by pliva » Mon Feb 21, 2011 10:03 pm	3	1807	Last post by kamel Thu Mar 24, 2011 9:11 pm
Help with appropriate chromatograph by akribis2 » Thu Mar 24, 2011 4:10 pm	8	3310	Last post by DSP007 Tue Apr 26, 2011 8:59 am
Metaldehyde UV wavelength? by CJRCL » Thu Mar 17, 2011 9:35 pm	2	2158	Last post by Spuzzin Thu Mar 24, 2011 2:12 pm
Broad HPLC thiamine peaks by kiska » Fri Mar 18, 2011 1:52 pm	5	2137	Last post by danko Thu Mar 24, 2011 8:26 am
column efficiency by archie » Tue Mar 22, 2011 9:23 am	5	1866	Last post by tom jupille Wed Mar 23, 2011 4:26 pm
ICS 2000, how to operate without RFIC? by MEG » Mon Jun 21, 2010 7:27 pm	1	1387	Last post by MEG Wed Mar 23, 2011 3:24 pm
SEC question - poor chromatography by Robotjock » Tue Mar 22, 2011 7:17 pm	2	1658	Last post by ym3142 Wed Mar 23, 2011 12:41 pm
multi-port valve for the chromatography by gbern » Mon Mar 21, 2011 7:04 pm	3	2700	Last post by Gilson_PLC2020 Tue Mar 22, 2011 4:09 pm
Where is the obstruction? by smartin » Tue Mar 15, 2011 9:25 am	14	2324	Last post by carls Tue Mar 22, 2011 2:30 pm
Extra peaks in alfacalcidol formulation by santech » Wed Mar 16, 2011 10:01 am	6	2288	Last post by ym3142 Mon Mar 21, 2011 8:23 pm
Relative Response Factor by nicolenguyen » Mon Mar 21, 2011 5:26 pm	1	2009	Last post by krickos Mon Mar 21, 2011 7:27 pm
HPLC Sunscreen method Validation by mikhalidis » Tue Mar 15, 2011 3:55 pm	8	5247	Last post by mikhalidis Mon Mar 21, 2011 4:51 pm
Air bubble in HPLC Pump by sboopathi » Tue Mar 15, 2011 5:19 am	7	20436	Last post by carlos.teixeira Mon Mar 21, 2011 1:20 pm
Patchouli alcohol by bobby12 » Fri Mar 18, 2011 5:14 pm	1	2164	Last post by Gerhard Kratz Mon Mar 21, 2011 10:42 am
heparan sulfate analysis by ambre » Tue Mar 15, 2011 9:04 am	2	1982	Last post by ambre Mon Mar 21, 2011 7:40 am
Inositol by pharmacist » Thu Mar 17, 2011 5:21 am	4	2248	Last post by pharmacist Sun Mar 20, 2011 6:32 am
Poor %RSD for a peak eluting at the solvent front by gtma » Wed Mar 16, 2011 6:40 pm	5	2887	Last post by carls Sat Mar 19, 2011 3:34 pm
ANALYSIS OF GLUCOSE BY HPLC by afiqahtarmidi » Tue Mar 01, 2011 12:55 pm	13	8073	Last post by venuzz Fri Mar 18, 2011 10:25 am
SAX switching from novosep A-1 anion to SphereClone SAX by MestizoJoe » Thu Mar 17, 2011 7:25 pm	1	2703	Last post by MestizoJoe Thu Mar 17, 2011 8:16 pm
Problem with clogged and pre-column by Gilberto » Thu Mar 17, 2011 3:37 pm	2	2191	Last post by LC_labrat Thu Mar 17, 2011 7:01 pm
Variations in impurity content of the same batch by santech » Wed Mar 16, 2011 5:32 am	12	3181	Last post by tom jupille Thu Mar 17, 2011 12:23 pm
Need Kontron System 525 HPLC pump user manual by anabiona » Fri Feb 11, 2011 4:12 pm	1	2086	Last post by Hfranz Thu Mar 17, 2011 9:04 am
Impurities in drug products by santech » Tue Mar 15, 2011 9:24 am	3	2200	Last post by santech Thu Mar 17, 2011 5:03 am

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