Liquid Chromatography

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Ion Chromatography Discussions about IC and related topics Topics: 402	402	1507	Last post Re: Setting retention time wi… by Jofichrom Fri Mar 06, 2026 2:33 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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11916 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	83606	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Detector output to computer..? by pipettemonkey » Fri Sep 25, 2009 4:30 pm	6	2382	Last post by ScottHorn Sat Oct 03, 2009 7:09 pm
Surfactant removal by Emi » Thu Sep 24, 2009 6:10 pm	7	2007	Last post by XL Sat Oct 03, 2009 6:28 am
method carry over problem (very hydrophobic protein) by miro2009 » Thu Oct 01, 2009 8:48 pm	8	2695	Last post by Uwe Neue Sat Oct 03, 2009 12:29 am
Standard addition by CSV » Tue Sep 29, 2009 9:11 am	20	3928	Last post by HW Mueller Fri Oct 02, 2009 3:51 pm
choice of ion-paring agent by miro2009 » Thu Oct 01, 2009 8:58 pm	4	1967	Last post by HW Mueller Fri Oct 02, 2009 3:34 pm
Related Substance testing of an inpurity ... by seamoro » Fri Oct 02, 2009 10:44 am	3	1708	Last post by DR Fri Oct 02, 2009 1:54 pm
L-61 USP HPLC columsn provider by ccharles » Thu Oct 01, 2009 5:21 pm	2	2075	Last post by grzesiek Fri Oct 02, 2009 6:17 am
what is the concentration in this case please ? by Newchromatographer » Thu Oct 01, 2009 11:42 am	6	4137	Last post by JGK Wed Oct 07, 2009 9:36 pm
Ion pairing on Carbon Based Stationary Phase by M. Farooq » Mon Sep 28, 2009 5:41 am	5	3336	Last post by Kostas Petritis Tue Sep 29, 2009 8:43 pm
Method Comparison / Method Transfer by Sallybeetle » Mon Sep 28, 2009 9:17 pm	5	1725	Last post by grzesiek Tue Sep 29, 2009 2:11 pm
HP 1050 UV-Vis method transfer to PE Series 200 by djletin » Fri Sep 18, 2009 7:24 pm	7	2265	Last post by tom jupille Tue Sep 29, 2009 5:40 am
Issue with amino acid analysis by zilal » Fri Jul 24, 2009 5:34 pm	13	4723	Last post by DWR Tue Sep 29, 2009 12:09 am
Relative Response Factor Equivalence Between 2 methods by DeniseHeinz » Thu Sep 24, 2009 7:55 pm	11	4018	Last post by grzesiek Mon Sep 28, 2009 3:20 pm
problem with background noise by lab tech » Sat Sep 19, 2009 7:35 pm	4	2091	Last post by lab tech Sun Sep 27, 2009 10:54 am
alendronate usp by antolezcano » Fri Sep 25, 2009 3:07 pm	1	1174	Last post by grzesiek Fri Sep 25, 2009 5:42 pm
NO2/NO3 in a metals lab? by Bigbear » Fri Jul 31, 2009 1:50 pm	4	1480	Last post by tom jupille Fri Sep 25, 2009 5:02 pm
Help locked out of Chemstation by bgiles » Fri Sep 25, 2009 4:41 pm	4	4983	Last post by LC_addict Tue Nov 17, 2009 12:36 pm
Identifying peptides based on HPLC retention by pipettemonkey » Wed Sep 23, 2009 9:08 pm	2	1380	Last post by Kostas Petritis Thu Sep 24, 2009 2:56 pm
buffering solutions at same pH, but different temperatures.. by dkreller » Wed Sep 23, 2009 8:21 pm	5	1849	Last post by HW Mueller Thu Sep 24, 2009 8:08 am
damage calculation? by pipettemonkey » Wed Sep 23, 2009 8:57 pm	1	1185	Last post by Uwe Neue Wed Sep 23, 2009 10:36 pm
groundcorp bankrupt? by pipettemonkey » Wed Sep 23, 2009 8:39 pm	1	1312	Last post by Uwe Neue Wed Sep 23, 2009 10:33 pm
Falsly inflated results... by lnaylor » Mon Sep 21, 2009 6:13 pm	18	2802	Last post by lnaylor Wed Sep 23, 2009 8:07 pm
Gradient Elution: Delays Between Runs? by dkreller » Fri Sep 18, 2009 7:40 pm	11	3021	Last post by DR Tue Sep 22, 2009 1:42 pm
Result ID's by mroosi54 » Mon Sep 21, 2009 8:21 pm	1	1235	Last post by DR Tue Sep 22, 2009 1:33 pm
moving peak by smkh » Sun Sep 06, 2009 3:24 pm	36	3764	Last post by danko Mon Sep 21, 2009 7:52 am
Purine compound stability in solution by vikmurush » Sun Sep 20, 2009 7:46 pm	2	1267	Last post by vikmurush Sun Sep 20, 2009 11:50 pm
april 7th meeting by pipettemonkey » Fri Sep 11, 2009 7:32 am	6	1647	Last post by Consumer Products Guy Sat Sep 19, 2009 3:20 pm
Separation of D & L phenylephrin by Chandresh K. Soni » Sat Sep 19, 2009 5:58 am	1	1185	Last post by Uwe Neue Sat Sep 19, 2009 1:42 pm
Is there an accepted RT variation norm ? Please indicate . by Mayank72 » Tue Sep 08, 2009 11:25 am	11	3256	Last post by Jade.Barker Fri Sep 18, 2009 6:48 pm
Phenylephrin Hydrochloride by Chandresh K. Soni » Wed Sep 16, 2009 10:57 am	4	2720	Last post by Chandresh K. Soni Fri Sep 18, 2009 12:16 pm
scale up difference by rgamage » Thu Sep 17, 2009 5:50 am	3	1651	Last post by tom jupille Thu Sep 17, 2009 8:49 pm
Acetone to replace Acetonitrile for LC-MS application by chhubert » Thu Sep 10, 2009 1:22 am	3	2529	Last post by Uwe Neue Thu Sep 17, 2009 4:46 pm
Waters PorapakRDX SPE / Varian BondElut SPE by bisnettrj2 » Sat Sep 12, 2009 10:29 pm	12	2175	Last post by Uwe Neue Thu Sep 17, 2009 4:18 pm
1100 needle not seating by db32 » Thu Sep 10, 2009 7:28 pm	9	3473	Last post by db32 Thu Sep 17, 2009 4:15 pm
resolution between impurities "official" requireme by ricopalazo » Thu Sep 17, 2009 8:34 am	3	2459	Last post by tom jupille Thu Sep 17, 2009 2:57 pm
Purity factor threshold by Dominique » Sat Sep 12, 2009 4:19 pm	5	7447	Last post by HPLCCONSULT Wed Sep 16, 2009 10:03 pm
separations of antibiotics by Miguel » Wed Sep 16, 2009 11:16 am	1	1395	Last post by sam.pedraglio Wed Sep 16, 2009 4:19 pm
filters ? what is the different ? by Newchromatographer » Mon Sep 14, 2009 3:34 pm	2	1459	Last post by Newchromatographer Wed Sep 16, 2009 11:36 am
Topiramate by Chandresh K. Soni » Wed Sep 16, 2009 11:08 am	0	1260	Last post by Chandresh K. Soni Wed Sep 16, 2009 11:08 am
Propofol by Chandresh K. Soni » Wed Sep 16, 2009 11:01 am	0	1266	Last post by Chandresh K. Soni Wed Sep 16, 2009 11:01 am
RP HPLC for separation of proteins & gradient elution by stevepluto » Tue Sep 15, 2009 5:48 pm	5	3729	Last post by grzesiek Wed Sep 16, 2009 8:37 am
Oligonucleotide RP-HPLC Peak by HPLC_Help » Tue Sep 15, 2009 1:00 pm	3	2346	Last post by grzesiek Tue Sep 15, 2009 2:03 pm
sulphate/sulphate with ri detector by mkatsiabani » Fri Sep 11, 2009 8:45 am	8	1972	Last post by Markus Laeubli, Metrohm Tue Sep 15, 2009 12:26 pm
Sample loop in Waters 717plus autosampler by chhubert » Mon Sep 14, 2009 8:55 am	5	5275	Last post by chhubert Tue Sep 15, 2009 4:16 am
Contaminated laboratory water by bisnettrj2 » Mon Sep 14, 2009 4:34 am	4	2044	Last post by Bruce Hamilton Mon Sep 14, 2009 9:18 pm
chemometry HPLC HPTLC use by prashant.dev.7 » Mon Sep 14, 2009 6:09 am	1	1621	Last post by tom jupille Mon Sep 14, 2009 6:03 pm
Varian 410 and Star 5.5 - help? by cat_chemist » Mon Sep 14, 2009 1:04 am	2	2427	Last post by cat_chemist Mon Sep 14, 2009 11:07 am
about HPLC and HPTLC journals by prashant.dev.7 » Mon Sep 14, 2009 5:19 am	0	2047	Last post by prashant.dev.7 Mon Sep 14, 2009 5:19 am
Eclipse XDB Vs Eclipse Plus by Kwet » Tue Sep 01, 2009 6:43 am	33	16412	Last post by mohan_2008 Sun Sep 13, 2009 3:15 am
Bad Baseline by bisnettrj2 » Fri Sep 04, 2009 4:59 am	42	8079	Last post by bisnettrj2 Sat Sep 12, 2009 3:22 pm

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