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	125582	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Experience with replacement of Waters 2475 lamp? by dkreller » Mon Nov 08, 2010 9:54 pm	6	3014	Last post by remesquaddie Wed Jul 13, 2011 11:16 pm
1100 pressure fluctuation by sepscientologist » Wed Jul 06, 2011 10:31 pm	7	3150	Last post by sepscientologist Wed Jul 13, 2011 8:45 pm
How to reduce ferrous ion interference during assay by HPLC? by samarthan » Wed Jul 13, 2011 3:04 pm	0	1769	Last post by samarthan Wed Jul 13, 2011 3:04 pm
column chrom by Durga malleswar » Tue Jul 12, 2011 9:29 am	3	1845	Last post by HW Mueller Wed Jul 13, 2011 9:17 am
PE Iris by mmegliol » Wed Jul 13, 2011 3:11 am	0	1717	Last post by mmegliol Wed Jul 13, 2011 3:11 am
Metrohm 761 IC by ilawrence » Tue Jul 05, 2011 7:30 am	4	7257	Last post by ilawrence Wed Jul 13, 2011 2:44 am
Why the changes in pH of buffer? by Sazabi » Tue Jul 12, 2011 9:20 pm	1	1622	Last post by sepscientologist Tue Jul 12, 2011 10:10 pm
Regenerating polyhydroxyethyl columns by DJ » Sun Jul 10, 2011 10:16 pm	6	2000	Last post by Andy Alpert Tue Jul 12, 2011 8:44 pm
Is there any method to determine Dimethylamine by TLC??? by vishnu » Wed Jul 06, 2011 4:36 pm	13	2870	Last post by tom jupille Tue Jul 12, 2011 6:59 pm
is there a criteria for carryover peaks? by flora0975 » Fri Jul 08, 2011 5:02 pm	11	7570	Last post by tom jupille Tue Jul 12, 2011 6:57 pm
Injecting 5-10µL water onto ChiralPak AD-H Chiral Columns by Rob Burgess » Tue Jul 12, 2011 3:35 pm	2	2600	Last post by tom jupille Tue Jul 12, 2011 6:45 pm
UPLC Transfer by shaun78 » Thu Jun 23, 2011 5:18 pm	2	2032	Last post by krickos Tue Jul 12, 2011 5:29 pm
What is turning my methanol yellow/orange?? by Trishia » Tue Jul 05, 2011 2:30 pm	15	8737	Last post by Trishia Tue Jul 12, 2011 4:13 pm
ZORBAX Carbohydrate from Agilent - Help please by patomb » Tue Jul 12, 2011 3:43 pm	5	4054	Last post by sepscientologist Thu Jul 14, 2011 4:37 pm
Chem Station Help - Again by H34ds » Thu Jul 01, 2010 9:11 am	6	3706	Last post by DSP007 Tue Jul 12, 2011 2:39 pm
Mistery-Peak area 1/3 now by saioa » Mon Jul 11, 2011 8:34 am	3	1952	Last post by analyticalstudent Tue Jul 12, 2011 12:15 pm
vitamin K by rubypharma » Sat Jul 02, 2011 10:06 pm	2	1685	Last post by bomberang Tue Jul 12, 2011 5:23 am
trouble using dual detection mode of Waters 2487 detector by pri6886 » Fri Nov 26, 2010 1:30 am	1	1811	Last post by remesquaddie Mon Jul 11, 2011 8:30 pm
Dionex Pump Problem by lgchrom » Fri Dec 10, 2010 10:38 pm	1	1882	Last post by remesquaddie Mon Jul 11, 2011 8:25 pm
Waters Lambda-Max 481 autozero by herbmaker » Tue Jun 21, 2011 9:07 pm	1	6216	Last post by remesquaddie Mon Jul 11, 2011 8:08 pm
Agilent 1260 A lemon? by tbone » Sat Jun 04, 2011 1:48 pm	7	4583	Last post by HPLC algae chick Mon Jul 11, 2011 2:59 pm
high pressure and pressure fluctuations by haverickm1 » Mon Jul 11, 2011 4:43 am	1	1557	Last post by Gerhard Kratz Mon Jul 11, 2011 7:14 am
agilent 1200 elsd detector by mirac_han » Fri Jul 08, 2011 8:34 am	2	1848	Last post by JGK Fri Jul 08, 2011 7:36 pm
Pore size effect on elution by DaveM » Fri Jul 08, 2011 8:41 am	2	2466	Last post by Hollow Fri Jul 08, 2011 5:58 pm
A black line across my developed TLC plat by Felic » Wed May 25, 2011 2:03 pm	18	4357	Last post by HW Mueller Fri Jul 08, 2011 8:38 am
HPLC Mobile phase optimization phase diagram selection by krisradh1432 » Fri Jul 08, 2011 2:41 am	0	1610	Last post by krisradh1432 Fri Jul 08, 2011 2:41 am
Generating Reference Standards by vishall79 » Mon Jul 04, 2011 4:12 pm	3	1438	Last post by Blazer Thu Jul 07, 2011 9:37 pm
Connecting Jasco RI Detector via HP 35900e to Agilent 1100 by zurofft » Thu Jul 07, 2011 3:21 am	2	1769	Last post by sepscientologist Thu Jul 07, 2011 5:37 pm
Experience with Hitachi HPLC Equipment by Ananthy Maheson » Mon Jun 27, 2011 12:01 am	3	1666	Last post by unmgvar Thu Jul 07, 2011 4:41 pm
Ghost peak issue by cloudpp » Wed Jul 06, 2011 2:39 pm	2	1487	Last post by tom jupille Thu Jul 07, 2011 1:17 pm
WATERS 2475 Fluorescence detector problem by remesquaddie » Wed Jul 06, 2011 4:56 pm	2	1501	Last post by remesquaddie Wed Jul 06, 2011 8:59 pm
Formic Acid analysis with C18 HPLC column by shahid » Tue Jul 05, 2011 5:58 pm	2	2298	Last post by Lusby43 Wed Jul 06, 2011 6:53 am
G1311A Leak Test Failure by ksharp » Tue Jul 05, 2011 5:35 pm	1	1759	Last post by Consumer Products Guy Wed Jul 06, 2011 4:10 am
Polysulfoethyl vs polycat A @ pH 5 by DJ » Tue Jul 05, 2011 4:59 pm	2	1581	Last post by DJ Wed Jul 06, 2011 2:46 am
Optimizing gradients IEX, by DJ » Tue Jul 05, 2011 4:52 pm	1	1321	Last post by Ting Wu Tue Jul 05, 2011 9:28 pm
Peak brodening in Chiral pak-AD column by vvreddy » Tue Jul 05, 2011 4:15 am	3	1724	Last post by achkata Tue Jul 05, 2011 9:21 pm
Formic Acid analysis with C18 HPLC column by shahid » Tue Jul 05, 2011 5:55 pm	1	1837	Last post by achkata Tue Jul 05, 2011 7:45 pm
CAD flood (charged aerosol detector) by lynzjm » Mon Jul 04, 2011 8:42 am	3	2794	Last post by jpwoods Tue Jul 05, 2011 6:26 pm
detector by miumiu1351 » Fri Jun 24, 2011 3:41 pm	20	2392	Last post by unmgvar Tue Jul 05, 2011 10:10 am
to dry samples? by gvportari » Thu Jun 30, 2011 1:49 am	6	1635	Last post by Peter Apps Tue Jul 05, 2011 7:04 am
Help wrt. separation needed ! by Humad » Sat Jul 02, 2011 9:21 am	5	1536	Last post by unmgvar Mon Jul 04, 2011 6:39 pm
Phosphoric acid giving dirty baseline? by NYYFan » Fri Jul 01, 2011 12:57 pm	2	2646	Last post by tom jupille Mon Jul 04, 2011 3:38 pm
both negative and positive peak in my chrom by julietinmay » Tue Jun 28, 2011 7:30 pm	6	1779	Last post by Markus Laeubli, Metrohm Mon Jul 04, 2011 6:50 am
detector blocked by miumiu1351 » Fri Jun 24, 2011 2:56 pm	8	1478	Last post by unmgvar Sun Jul 03, 2011 7:21 pm
predicting retention in ion exchange hplc by DJ » Tue May 24, 2011 4:56 am	9	2479	Last post by Andy Alpert Sun Jul 03, 2011 3:19 am
Best UHPLC columns by jusuom » Tue Jun 28, 2011 6:44 am	1	1420	Last post by unmgvar Fri Jul 01, 2011 7:35 pm
Vintage Viscotek laser replacement by Nor_Chrom » Fri Jul 01, 2011 6:17 pm	1	1272	Last post by unmgvar Fri Jul 01, 2011 7:28 pm
Bore size of switching valve in Acquity sample manager by sbrand » Fri Jul 01, 2011 1:37 pm	0	1364	Last post by sbrand Fri Jul 01, 2011 1:37 pm
Units of UV abs. peak area in masslynx by grumbledook » Tue Mar 30, 2010 4:52 pm	2	7848	Last post by mspittel Thu Jun 30, 2011 12:06 pm
HP 1050 UV Detector. by dave » Wed Jun 29, 2011 11:34 am	4	1970	Last post by LCbob Thu Jun 30, 2011 7:47 am

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