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
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11916 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	84127	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
LC Dionex peaks troubleshooting by Imran » Wed Nov 14, 2007 3:03 pm	5	2263	Last post by unmgvar Tue Nov 20, 2007 6:32 pm
HPLC of Nucleic Acids by Eric Moore » Tue Oct 23, 2007 7:50 pm	8	3111	Last post by Eric Moore Tue Nov 20, 2007 3:47 pm
Is there any upper limit for gradient time (40-50 hours) by zf12345 » Mon Nov 19, 2007 5:34 am	5	2309	Last post by Bryan Evans Tue Nov 20, 2007 2:27 pm
Allowance for undissolved solids by AdrianF » Thu Nov 15, 2007 4:51 pm	15	5197	Last post by zokitano Mon Nov 19, 2007 4:48 pm
usp calculation by olivia » Sun Nov 18, 2007 2:14 pm	2	2098	Last post by AdrianF Mon Nov 19, 2007 10:10 am
system suitability for peptide mapping?? by rick1112 » Sat Nov 17, 2007 5:25 am	3	2036	Last post by danko Mon Nov 19, 2007 9:43 am
critical mass by mondy » Fri Nov 16, 2007 12:11 pm	3	1957	Last post by mondy Mon Nov 19, 2007 8:25 am
Peaks elute from the following run by genggeng » Tue Nov 13, 2007 10:53 pm	5	2070	Last post by Kostas Petritis Mon Nov 19, 2007 1:10 am
Determination of acetate by LC? by Mattias » Thu Nov 15, 2007 1:23 pm	4	2472	Last post by XL Sun Nov 18, 2007 7:43 am
Quick inquiries by Roxanne42 » Fri Nov 16, 2007 9:59 pm	1	1612	Last post by tom jupille Sat Nov 17, 2007 1:09 am
Validation Accetptance Criteria -Quick Response Requested by GoldLeader » Fri Nov 16, 2007 3:46 pm	3	1825	Last post by Dan Fri Nov 16, 2007 7:13 pm
Method Validation or Verification by VJ » Thu Nov 15, 2007 2:58 pm	5	2547	Last post by JM Fri Nov 16, 2007 10:05 am
Leaky connections: what am I doing wrong?! by Amesy » Wed Nov 14, 2007 3:57 am	9	5928	Last post by Amesy Fri Nov 16, 2007 4:12 am
How to calibrate an autosampler loop[ by ziyads » Wed Sep 19, 2007 11:45 am	8	3088	Last post by ljc Fri Nov 16, 2007 2:37 am
Calibration of HPLC equipment by oscarBAL » Fri Nov 09, 2007 9:41 pm	4	2912	Last post by Alfred88 Fri Nov 16, 2007 2:00 am
who is selling LC Chemiluminescence Nitrgen Detector by ym3142 » Thu Nov 15, 2007 6:28 pm	5	2059	Last post by ym3142 Fri Nov 16, 2007 12:00 am
column brand difference?? by rick1112 » Thu Nov 08, 2007 6:16 am	9	4008	Last post by Uwe Neue Thu Nov 15, 2007 11:19 pm
Backpressure Problem by LCGUY » Thu Nov 15, 2007 12:02 pm	3	1862	Last post by Consumer Products Guy Thu Nov 15, 2007 6:18 pm
Peak assymetry! by project44 » Wed Nov 14, 2007 5:21 pm	8	2596	Last post by AdrianF Thu Nov 15, 2007 10:22 am
advise by mk12 » Wed Nov 14, 2007 4:28 am	4	1846	Last post by Dan Wed Nov 14, 2007 10:39 pm
C18 column swich from 65% ACN to 65% MeOH by genggeng » Wed Nov 14, 2007 6:31 pm	2	1652	Last post by genggeng Wed Nov 14, 2007 9:14 pm
para-nitro-phenol by Raquel » Wed Nov 14, 2007 5:38 pm	2	1933	Last post by Consumer Products Guy Wed Nov 14, 2007 7:00 pm
criteria for the stock solution stability? by marine » Wed Nov 14, 2007 2:18 am	1	1877	Last post by Consumer Products Guy Wed Nov 14, 2007 3:12 pm
Peak eluting at solvent front by Merrin » Fri Nov 09, 2007 1:58 am	9	4597	Last post by Merrin Tue Nov 13, 2007 10:41 pm
thymohydroquinone by Louise77 » Tue Nov 13, 2007 3:26 am	1	2286	Last post by Bruce Hamilton Tue Nov 13, 2007 10:31 pm
USP on Mobile Phase by shaun78 » Tue Sep 25, 2007 6:56 pm	9	4497	Last post by tom jupille Tue Nov 13, 2007 4:10 pm
Tricky gradient setup, FPLC, AIEX by StefanAO » Sun Nov 11, 2007 1:48 am	6	2443	Last post by tom jupille Tue Nov 13, 2007 4:03 pm
ES Inds EPIC HILIC column by ljc » Fri Nov 09, 2007 3:24 am	2	2427	Last post by Patrik Appelblad Tue Nov 13, 2007 12:30 pm
Peak width decreasing as ret.time increases!Logical or not? by project44 » Mon Nov 12, 2007 9:43 pm	6	2518	Last post by project44 Tue Nov 13, 2007 12:06 am
pic reagent by olivia » Sun Nov 11, 2007 1:42 pm	8	6133	Last post by Rafael Chust Mon Nov 12, 2007 10:01 pm
pK by sunht » Fri Nov 09, 2007 4:12 pm	2	2104	Last post by sunht Sat Nov 10, 2007 10:28 am
HP 1100 - Drifting baseline problem!! by hluong68 » Mon Oct 29, 2007 10:45 pm	3	2361	Last post by ljc Sat Nov 10, 2007 3:42 am
some rookie questions by zimanli » Mon Oct 22, 2007 8:18 pm	11	3709	Last post by shaun78 Fri Nov 09, 2007 7:35 pm
Choice of column: C8, C18, C30, TSK-GEL Amide80, etc... by Amesy » Tue Nov 06, 2007 4:07 am	8	6707	Last post by Alex Buske Fri Nov 09, 2007 8:04 am
Apologies for access problems by tom jupille » Mon Nov 05, 2007 2:29 am	1	1980	Last post by tom jupille Fri Nov 09, 2007 12:58 am
Method validation for active substance - interference by H.Thomas » Wed Nov 07, 2007 9:28 am	1	1868	Last post by Bruce Hamilton Thu Nov 08, 2007 6:25 pm
how measure sugars in solid residues with hplc by starter » Thu Nov 08, 2007 12:20 am	0	1647	Last post by starter Thu Nov 08, 2007 12:20 am
Looking for by mk12 » Tue Nov 06, 2007 9:14 pm	0	1748	Last post by mk12 Tue Nov 06, 2007 9:14 pm
incompatibility of ibuprofen by paul duque » Mon Oct 29, 2007 4:05 am	6	3049	Last post by paul duque Tue Nov 06, 2007 5:01 am
Labeling Columns by wanda50 » Fri Nov 02, 2007 7:12 pm	2	2295	Last post by LC_labrat Mon Nov 05, 2007 6:49 pm
fat soluble vitamin by xozkn » Sun Nov 04, 2007 9:10 pm	1	2142	Last post by XL Mon Nov 05, 2007 5:48 pm
Citrate buffers by stanlee » Fri Nov 02, 2007 10:54 am	8	5164	Last post by zokitano Mon Nov 05, 2007 11:14 am
carbon load by olivia » Fri Nov 02, 2007 6:57 pm	2	1960	Last post by olivia Fri Nov 02, 2007 8:47 pm
poor retention of nucleosides by prathima_chem » Sun Oct 28, 2007 12:56 am	6	2503	Last post by prathima_chem Fri Nov 02, 2007 12:30 am
urinary oxalic & citric acids by y » Wed Oct 24, 2007 7:36 am	3	2376	Last post by Bryan Evans Thu Nov 01, 2007 4:38 pm
Injecting Very Large Volumes in HPLC by adam » Wed Oct 24, 2007 8:23 pm	8	5111	Last post by mcbart Thu Nov 01, 2007 4:18 pm
Carbonate analysis by chenjie » Mon Oct 29, 2007 11:50 pm	6	4088	Last post by Markus Laeubli, Metrohm Thu Nov 01, 2007 10:55 am
Histamine by HPLC without derivatization by sehling » Tue Oct 30, 2007 1:12 pm	5	5222	Last post by Markus Laeubli, Metrohm Thu Nov 01, 2007 10:46 am
4-epianhidrotetracycline by oscarBAL » Wed Oct 31, 2007 4:11 pm	8	3149	Last post by XL Thu Nov 01, 2007 6:17 am
Flavonoid conjugate analysis by HPLC by vellaikumar » Sat Oct 13, 2007 1:38 pm	7	3427	Last post by Bryan Evans Wed Oct 31, 2007 7:02 pm

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