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	125171	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Hydrocodone [July 4, 2004] by admin » Tue Aug 24, 2004 6:53 pm	2	5489	Last post by admin Tue Aug 24, 2004 6:55 pm
Pyridine substitute [July 5, 2004] by admin » Tue Aug 24, 2004 6:51 pm	0	5464	Last post by admin Tue Aug 24, 2004 6:51 pm
Peak integration - poorly resolved impurities [July 6, 2004] by admin » Tue Aug 24, 2004 6:50 pm	0	5675	Last post by admin Tue Aug 24, 2004 6:50 pm
How does helium degass mobile phase? [July 5, 2004] by admin » Tue Aug 24, 2004 6:47 pm	0	5550	Last post by admin Tue Aug 24, 2004 6:47 pm
Baseline drift [July 6, 2004] by admin » Tue Aug 24, 2004 6:44 pm	0	5062	Last post by admin Tue Aug 24, 2004 6:44 pm
Quantifying arabitol [July 6, 2004] by admin » Tue Aug 24, 2004 6:43 pm	0	4753	Last post by admin Tue Aug 24, 2004 6:43 pm
Negative Peaks in Chromatogram [July 6, 2004] by admin » Tue Aug 24, 2004 6:43 pm	0	4657	Last post by admin Tue Aug 24, 2004 6:43 pm
Profiling proteins [July 7, 2004] by admin » Tue Aug 24, 2004 6:42 pm	0	4540	Last post by admin Tue Aug 24, 2004 6:42 pm
HILIC serious peak broadening problems [July 7, 2004] by admin » Tue Aug 24, 2004 6:41 pm	0	6716	Last post by admin Tue Aug 24, 2004 6:41 pm
Retention time gets shorter and shorter... [July 7, 2004] by admin » Tue Aug 24, 2004 6:40 pm	0	4966	Last post by admin Tue Aug 24, 2004 6:40 pm
Negative RI peak? [July 7, 2004] by admin » Tue Aug 24, 2004 6:39 pm	0	4965	Last post by admin Tue Aug 24, 2004 6:39 pm
Change in retention time and baseline [July 7, 2004] by admin » Tue Aug 24, 2004 6:38 pm	0	4947	Last post by admin Tue Aug 24, 2004 6:38 pm
Chiral chromatography - Ibuprofen [July 8, 2004] by admin » Tue Aug 24, 2004 6:36 pm	0	4982	Last post by admin Tue Aug 24, 2004 6:36 pm
HPLC for Tretinoin (all trans retinoic acid) [July 8, 2004] by admin » Tue Aug 24, 2004 6:34 pm	0	5178	Last post by admin Tue Aug 24, 2004 6:34 pm
User Requirements for HPLC [July 8, 2004] by admin » Tue Aug 24, 2004 6:32 pm	0	10592	Last post by admin Tue Aug 24, 2004 6:32 pm
Stability Indicating Method [July 8, 2004] by admin » Tue Aug 24, 2004 6:31 pm	0	4941	Last post by admin Tue Aug 24, 2004 6:31 pm
Herbicide analysis [July 9, 2004] by admin » Tue Aug 24, 2004 6:27 pm	0	5301	Last post by admin Tue Aug 24, 2004 6:27 pm
Waters Alliance bubble recovery sequence [July 9, 2004] by admin » Tue Aug 24, 2004 6:26 pm	0	5419	Last post by admin Tue Aug 24, 2004 6:26 pm
Flow cell and sensitivity [July 10, 2004] by admin » Tue Aug 24, 2004 6:25 pm	0	4809	Last post by admin Tue Aug 24, 2004 6:25 pm
What causes negative peak in LC/UV? [July 11, 2004] by admin » Tue Aug 24, 2004 6:24 pm	0	5090	Last post by admin Tue Aug 24, 2004 6:24 pm
The HPLC method development bible [July 11, 2004] by admin » Tue Aug 24, 2004 6:23 pm	0	4964	Last post by admin Tue Aug 24, 2004 6:23 pm
Polyglycol acetate [July 11, 2004] by admin » Tue Aug 24, 2004 6:22 pm	0	4906	Last post by admin Tue Aug 24, 2004 6:22 pm
Electrochemical Detection in HPLC [July 11, 2004] by admin » Tue Aug 24, 2004 6:19 pm	0	6196	Last post by admin Tue Aug 24, 2004 6:19 pm
Sample Dilution Problem [July 12, 2004] by admin » Tue Aug 24, 2004 6:18 pm	0	5311	Last post by admin Tue Aug 24, 2004 6:18 pm
IC - Forcing the cal. curve through zero ? [July 12, 2004] by admin » Tue Aug 24, 2004 6:17 pm	0	5131	Last post by admin Tue Aug 24, 2004 6:17 pm
Graphite Columns [July 12, 2004] by admin » Tue Aug 24, 2004 6:15 pm	0	5227	Last post by admin Tue Aug 24, 2004 6:15 pm
TOCOTRIENOL & ORYZANOL STANDARDS [July 13, 2004] by admin » Tue Aug 24, 2004 6:13 pm	0	6040	Last post by admin Tue Aug 24, 2004 6:13 pm
HPLC ANALYSIS OF HEPARIN [July 13, 2004] by admin » Tue Aug 24, 2004 6:12 pm	0	5639	Last post by admin Tue Aug 24, 2004 6:12 pm
LOD and LOQ according to Ph. Eur. [July 13, 2004] by admin » Tue Aug 24, 2004 6:11 pm	0	6922	Last post by admin Tue Aug 24, 2004 6:11 pm
AMINOACIDS HPLC [July 14, 2004] by admin » Tue Aug 24, 2004 6:10 pm	0	5811	Last post by admin Tue Aug 24, 2004 6:10 pm
Retention time problem [July 13, 2004] by admin » Tue Aug 24, 2004 6:08 pm	0	5773	Last post by admin Tue Aug 24, 2004 6:08 pm
air lock problem in Prep HPLC [July 14, 2004] by admin » Tue Aug 24, 2004 6:07 pm	0	5698	Last post by admin Tue Aug 24, 2004 6:07 pm
Lactic Acid Analysis: Mono-, Di- and Trimers [July 14, 2004] by admin » Tue Aug 24, 2004 6:04 pm	0	5820	Last post by admin Tue Aug 24, 2004 6:04 pm
Reversing a column!!!!! [July 14, 2004] by admin » Tue Aug 24, 2004 6:03 pm	0	6391	Last post by admin Tue Aug 24, 2004 6:03 pm
Instrument problem with Finnigan TSQ 700 [July 15, 2004] by admin » Tue Aug 24, 2004 6:01 pm	0	5555	Last post by admin Tue Aug 24, 2004 6:01 pm
THF/MeOH needle wash [July 15, 2004] by admin » Tue Aug 24, 2004 6:01 pm	0	6093	Last post by admin Tue Aug 24, 2004 6:01 pm
Agilent autosampler carry over [July 15, 2004] by admin » Tue Aug 24, 2004 6:00 pm	0	6686	Last post by admin Tue Aug 24, 2004 6:00 pm
Cation suppression agents in IC [July 16, 2004] by admin » Tue Aug 24, 2004 5:58 pm	0	5858	Last post by admin Tue Aug 24, 2004 5:58 pm
Glyphosate impurities [July 16, 2004] by admin » Tue Aug 24, 2004 5:57 pm	0	6150	Last post by admin Tue Aug 24, 2004 5:57 pm
pH and retention [July 20, 2004] by admin » Tue Aug 24, 2004 5:54 pm	0	6130	Last post by admin Tue Aug 24, 2004 5:54 pm
Some Basic Questions [July 29, 2004] by admin » Tue Aug 24, 2004 5:53 pm	0	6235	Last post by admin Tue Aug 24, 2004 5:53 pm
Silica / zirconia / titaniafor HILIC [August 1, 2004] by admin » Tue Aug 24, 2004 5:51 pm	0	6032	Last post by admin Tue Aug 24, 2004 5:51 pm
Instrument Calibration [August 3, 2004] by admin » Tue Aug 24, 2004 5:50 pm	0	6305	Last post by admin Tue Aug 24, 2004 5:50 pm
DONEPEZIL Dissolution Test [August 9, 2004] by admin » Tue Aug 24, 2004 5:46 pm	0	6136	Last post by admin Tue Aug 24, 2004 5:46 pm
Derivitization of Tranexamic acid [August 11, 2004] by admin » Tue Aug 24, 2004 5:42 pm	0	6146	Last post by admin Tue Aug 24, 2004 5:42 pm
Validation for Dequalinium Chloride Tablet [August 12, 2004] by admin » Tue Aug 24, 2004 5:41 pm	0	6691	Last post by admin Tue Aug 24, 2004 5:41 pm
Cosmetic serums [August 20, 2004] by admin » Tue Aug 24, 2004 5:36 pm	0	6308	Last post by admin Tue Aug 24, 2004 5:36 pm
Formaldehyde w/ HPLC or headspace GC-MS/FID [August 23, 2004 by admin » Tue Aug 24, 2004 5:34 pm	0	6664	Last post by admin Tue Aug 24, 2004 5:34 pm
Problem with high pressure in HPLC system [June 10, 2004] by admin » Mon Aug 23, 2004 5:07 pm	0	6999	Last post by admin Mon Aug 23, 2004 5:07 pm
HPLC Ambient Temperature? [June 11, 2004] by admin » Mon Aug 23, 2004 5:06 pm	0	7207	Last post by admin Mon Aug 23, 2004 5:06 pm

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