Liquid Chromatography

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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	125287	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

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Re-validation by agentile » Fri Oct 07, 2011 6:55 pm	3	1800	Last post by Alex Buske Mon Oct 10, 2011 7:50 am
wavelenght accuracy determination. by mirac_han » Sat Oct 08, 2011 6:45 pm	3	3003	Last post by bisnettrj2 Mon Oct 10, 2011 6:37 am
can anyone explain this? by mas23 » Fri Oct 07, 2011 6:24 pm	11	2358	Last post by Hollow Sun Oct 09, 2011 10:12 pm
Pressure fluctuations? Effects on chromatography? by dkreller » Wed Oct 05, 2011 10:57 pm	4	2092	Last post by remesquaddie Fri Oct 07, 2011 11:20 pm
Beckman model 126 pump problems by RerumNatura » Fri Jul 08, 2011 4:57 pm	3	2031	Last post by stev434 Fri Oct 07, 2011 11:03 pm
New column gives me different values from replaced column.. by Johnhz2000 » Thu Oct 06, 2011 9:58 pm	4	1512	Last post by HPLCaddict Fri Oct 07, 2011 8:04 pm
Separation of isomers of Tolfenpyrad on HPLC by praveenpaliwal » Fri Oct 07, 2011 4:34 pm	0	1427	Last post by praveenpaliwal Fri Oct 07, 2011 4:34 pm
Dual use of HPLC system for DAD and MS detection by Edde » Tue Oct 04, 2011 4:43 pm	10	2712	Last post by carls Fri Oct 07, 2011 2:17 pm
Ion Exchange- Equib times? by LC_addict » Wed Oct 05, 2011 3:10 pm	2	1527	Last post by Markus Laeubli, Metrohm Fri Oct 07, 2011 8:27 am
In-direct UV/Ion Exchange Chromo Problems!! by LC_addict » Wed Oct 05, 2011 7:38 am	4	1455	Last post by Markus Laeubli, Metrohm Fri Oct 07, 2011 8:18 am
Peak in the blank-please help by Sarah1233 » Mon Oct 03, 2011 8:20 pm	14	2036	Last post by Sarah1233 Thu Oct 06, 2011 10:39 pm
HPLC Pesticide Column by SamC489 » Thu Sep 29, 2011 2:44 pm	3	1700	Last post by Russ Thu Oct 06, 2011 9:21 pm
normal phase LC-MS additives by hfredricks » Tue Oct 04, 2011 2:47 pm	4	2527	Last post by hfredricks Thu Oct 06, 2011 5:28 pm
How to report amount below LOQ in precision table? by krisradh1432 » Tue Oct 04, 2011 9:38 am	4	2873	Last post by JGK Wed Oct 05, 2011 8:14 pm
RI Detector Energy by HPLC_Help » Mon Oct 03, 2011 6:57 pm	2	1393	Last post by tom jupille Wed Oct 05, 2011 6:40 pm
What is overlay injections? by satyam_qa » Sun Oct 02, 2011 6:14 am	4	7087	Last post by KDF Wed Oct 05, 2011 5:27 pm
Fractionation with silica..whats this called SEC?? by seamoro » Wed Oct 05, 2011 11:05 am	2	1587	Last post by KDF Wed Oct 05, 2011 4:37 pm
Waters 2487 - error message 'peak not found' by Neerroo » Fri Sep 23, 2011 6:05 am	4	5661	Last post by Neerroo Wed Oct 05, 2011 12:22 pm
HPLC RT's by brbabu_1979 » Mon Sep 26, 2011 3:34 pm	10	1922	Last post by Alexandre Wed Oct 05, 2011 7:08 am
Analysis of Lysozyme using HPLC by wongyl4985 » Tue Oct 04, 2011 4:02 am	4	2536	Last post by sepscientologist Tue Oct 04, 2011 4:41 pm
Residual sum of squares ICH by ldcarthy » Tue Jul 26, 2011 9:02 am	4	4296	Last post by nonagon Tue Oct 04, 2011 7:49 am
calibration curve and LoQ by gkoksal » Tue Sep 27, 2011 1:36 pm	1	1444	Last post by shahi.hardeep Mon Oct 03, 2011 11:02 pm
exporting importing data for SEC by MestizoJoe » Mon Oct 03, 2011 9:05 pm	0	2305	Last post by MestizoJoe Mon Oct 03, 2011 9:05 pm
WAX-ERLIC by DJ » Sun Oct 02, 2011 1:44 am	1	1456	Last post by Andy Alpert Mon Oct 03, 2011 2:36 pm
Maximum pressures of LC systems/columns - development? by jusuom » Mon Oct 03, 2011 4:03 am	0	1340	Last post by jusuom Mon Oct 03, 2011 4:03 am
peak symetry by jonh29 » Thu Sep 29, 2011 9:05 pm	5	1488	Last post by unmgvar Sat Oct 01, 2011 6:54 pm
Poros (perfusion) columns by adam » Fri Sep 30, 2011 4:09 am	1	1459	Last post by tom jupille Fri Sep 30, 2011 6:37 pm
Ion exchange Sax column by mdiaz » Thu Sep 29, 2011 4:38 pm	1	2247	Last post by tom jupille Fri Sep 30, 2011 6:34 pm
Linearity failure in SEC HPLC of FMDV picornavirus (TSKgel) by mspittel » Mon Sep 12, 2011 5:03 pm	7	2428	Last post by unmgvar Fri Sep 30, 2011 5:26 am
HPLC calculations with external standard by LabHPLC » Thu Sep 29, 2011 11:08 am	1	3132	Last post by tom jupille Thu Sep 29, 2011 2:36 pm
Stability of analytical solutions by Lrv » Wed Sep 21, 2011 6:53 pm	8	9901	Last post by lynzjm Thu Sep 29, 2011 1:08 pm
Restek C8 stability at low pH? by passy » Wed Sep 28, 2011 3:48 am	5	1767	Last post by nschwartz Wed Sep 28, 2011 8:21 pm
stability diphenyl column ? by rick1112 » Mon Sep 19, 2011 11:48 am	3	1552	Last post by XL Wed Sep 28, 2011 6:25 pm
perazine dimaleate HPLC by thekartis » Wed Sep 28, 2011 8:51 am	0	1580	Last post by thekartis Wed Sep 28, 2011 8:51 am
unknown compounds identification based only on MS spectrum by semia » Wed Sep 21, 2011 2:55 pm	13	6247	Last post by james little Mon Nov 21, 2011 8:01 pm
Polymer based NH2 columns by mashtikar » Fri Sep 23, 2011 8:53 am	12	5519	Last post by Andy Alpert Tue Sep 27, 2011 2:46 pm
UV-Vis absorption changes when the cuvette direction changes by thohry » Tue Sep 27, 2011 7:29 am	1	3206	Last post by lmh Tue Sep 27, 2011 9:04 am
LC method for TnBP by miro2009 » Fri Sep 23, 2011 6:51 pm	8	3211	Last post by XL Tue Sep 27, 2011 4:33 am
pH measurement temperature ranges by biochemist » Mon Sep 26, 2011 7:06 am	6	2552	Last post by biochemist Mon Sep 26, 2011 11:22 pm
Preventative Maintence on a Dionex ICS-3000 by Jesterrose » Wed Sep 21, 2011 2:42 pm	1	1554	Last post by jessetc Mon Sep 26, 2011 6:41 pm
xanthan gum by radhika » Mon Sep 26, 2011 5:09 am	2	1941	Last post by radhika Mon Sep 26, 2011 1:00 pm
Disulfiram solution by fatemeh2723 » Sun Sep 25, 2011 2:48 pm	1	1417	Last post by tom jupille Mon Sep 26, 2011 2:59 am
cation exchange chromatography of peptides by bhattharry » Wed Sep 21, 2011 4:01 pm	9	2197	Last post by Andy Alpert Sun Sep 25, 2011 10:05 pm
Agilent 1100 HPLC DAD by MitchHowell » Wed Sep 21, 2011 4:07 pm	4	2064	Last post by KDF Sat Sep 24, 2011 12:42 am
Dissolution problem Clidinium Br and Chlordiazepoxide HCL by phammer » Wed Sep 21, 2011 4:36 am	2	2304	Last post by tom jupille Fri Sep 23, 2011 10:08 pm
method validation for liquid samples and lyophilized product by miro2009 » Fri Sep 23, 2011 6:55 pm	1	1350	Last post by JGK Fri Sep 23, 2011 8:27 pm
Waters 2690 power supply by RhysB » Thu Sep 22, 2011 3:17 am	2	1453	Last post by Peter Skelton Fri Sep 23, 2011 3:43 pm
Help with Degasser by mashtikar » Mon Sep 19, 2011 1:07 pm	4	1905	Last post by lynzjm Fri Sep 23, 2011 10:31 am
Carbaryl stability of analytical solution by Alexandre » Fri Sep 23, 2011 8:20 am	0	1262	Last post by Alexandre Fri Sep 23, 2011 8:20 am
Loss of retension in ion pair chromatography by ether » Wed Sep 21, 2011 11:54 am	1	1288	Last post by tom jupille Thu Sep 22, 2011 1:59 am

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