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	83527	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
injection volume is changing the chromatography by R&D-Chemist » Tue Mar 29, 2011 4:21 pm	4	2196	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	2768	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	2147	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	3760	Last post by Newchromatographer Fri Apr 08, 2011 2:23 pm
THF for GPC by push » Thu Mar 10, 2011 7:37 pm	4	3731	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	2767	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	2079	Last post by LabChick Mon Mar 28, 2011 7:54 pm
HPLC problems by amro tarek » Mon Mar 28, 2011 7:03 pm	1	1700	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	5287	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	2305	Last post by bisnettrj2 Mon Mar 28, 2011 5:49 am
TFA vs HFBA by grumbledook » Tue Mar 15, 2011 9:53 pm	7	6928	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	3705	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	2824	Last post by WillyOne Sat Mar 26, 2011 8:02 pm
ICS 3000 by aqawwas » Sat Mar 26, 2011 12:15 pm	2	3249	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	3621	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	7298	Last post by Gilson_PLC2020 Fri Mar 25, 2011 4:47 pm
Air issues by floguigui » Tue Mar 22, 2011 9:40 am	5	1832	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	4716	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	2175	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	1482	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	1729	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	3175	Last post by DSP007 Tue Apr 26, 2011 8:59 am
Metaldehyde UV wavelength? by CJRCL » Thu Mar 17, 2011 9:35 pm	2	2061	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	2023	Last post by danko Thu Mar 24, 2011 8:26 am
column efficiency by archie » Tue Mar 22, 2011 9:23 am	5	1763	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	1313	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	1573	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	2403	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	2227	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	2194	Last post by ym3142 Mon Mar 21, 2011 8:23 pm
Relative Response Factor by nicolenguyen » Mon Mar 21, 2011 5:26 pm	1	1903	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	5103	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	20029	Last post by carlos.teixeira Mon Mar 21, 2011 1:20 pm
Patchouli alcohol by bobby12 » Fri Mar 18, 2011 5:14 pm	1	2066	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	1883	Last post by ambre Mon Mar 21, 2011 7:40 am
Inositol by pharmacist » Thu Mar 17, 2011 5:21 am	4	2126	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	2775	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	7902	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	2588	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	2069	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	2940	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	1994	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	2103	Last post by santech Thu Mar 17, 2011 5:03 am
Agilent 1100 OQ/PV by ksharp » Wed Mar 16, 2011 6:24 pm	1	2335	Last post by ksharp Wed Mar 16, 2011 6:54 pm
Agilent 1100 pump pressure and flow variable by venuzz » Thu Mar 10, 2011 2:21 pm	4	2391	Last post by ksharp Wed Mar 16, 2011 6:43 pm
SEC column stability by BoGa » Tue Mar 15, 2011 10:52 am	2	1613	Last post by Gerhard Kratz Tue Mar 15, 2011 3:02 pm
accuracy solutions concentration by Biopharmchat » Mon Mar 14, 2011 11:37 pm	2	1652	Last post by Consumer Products Guy Tue Mar 15, 2011 1:45 pm
2 Agilent 1200 - 2 pressure profiles by annaand » Mon Mar 14, 2011 3:58 pm	1	1539	Last post by R13 Tue Mar 15, 2011 10:44 am
accuracy prep by Biopharmchat » Mon Mar 14, 2011 11:40 pm	1	1385	Last post by Consumer Products Guy Tue Mar 15, 2011 3:19 am
UV detector cell temperature by miro2009 » Mon Mar 14, 2011 5:16 pm	1	2130	Last post by danko Mon Mar 14, 2011 8:46 pm

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