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	83569	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
polystyrene divinylbenzene sulfate columns by Noser222 » Tue Mar 15, 2005 3:30 pm	2	3576	Last post by tom jupille Wed Apr 06, 2005 5:11 am
Increase of column backpressure by Provetech » Wed Mar 30, 2005 9:30 am	3	3616	Last post by dave hometchko Wed Apr 06, 2005 2:55 am
flow direction on the HPLC column by jduan » Mon Mar 28, 2005 5:23 pm	36	14950	Last post by Uwe Neue Tue Apr 05, 2005 11:36 pm
Precision and Accuracy by ananda » Mon Apr 04, 2005 8:08 pm	4	5754	Last post by ananda Tue Apr 05, 2005 9:07 pm
pH in a viscous formulation by mtnshawn » Mon Apr 04, 2005 4:58 pm	5	3642	Last post by HW Mueller Tue Apr 05, 2005 7:26 am
In line filter/pre column by Provetech » Fri Apr 01, 2005 7:51 am	3	3835	Last post by Jeff Brewer Tue Apr 05, 2005 2:55 am
Looking for Dionex ACI manual by sjmarin » Tue Mar 29, 2005 8:22 pm	1	3093	Last post by Jeff Brewer Sun Apr 03, 2005 3:15 pm
Internal Standard by Chemist2 » Thu Mar 03, 2005 8:03 am	20	7671	Last post by tom jupille Sat Apr 02, 2005 12:10 am
Force Degradation by okara » Mon Mar 07, 2005 5:46 pm	6	4303	Last post by JM Fri Apr 01, 2005 6:16 am
How to eliminate acetic acid in fraction after prep-HPLC ? by atropine » Fri Mar 25, 2005 5:07 am	9	5334	Last post by JA Thu Mar 31, 2005 11:23 pm
peak spliting from Gard cartriage by meillid » Thu Mar 24, 2005 7:15 pm	7	3899	Last post by JA Thu Mar 31, 2005 11:11 pm
Column temp and sample temp by michaelcarolus » Tue Mar 29, 2005 3:49 pm	6	4528	Last post by JA Thu Mar 31, 2005 9:45 pm
Liquid Chromatography by chsp » Wed Mar 30, 2005 10:32 am	4	3180	Last post by JA Thu Mar 31, 2005 9:07 pm
HPLC help needed by rajtush » Wed Mar 30, 2005 3:58 pm	2	2930	Last post by JM Thu Mar 31, 2005 10:39 am
problem with glyphosate analysis by leon » Fri Mar 18, 2005 8:08 am	13	6639	Last post by leon Thu Mar 31, 2005 3:11 am
Standard abbreviation for Retention Time? by ananda » Wed Mar 30, 2005 9:43 pm	2	7365	Last post by ananda Wed Mar 30, 2005 10:00 pm
measurment of MEOH/aqueous mobile phase pH by pipettemonkey » Sat Mar 26, 2005 9:35 am	5	4613	Last post by Mark Tracy Wed Mar 30, 2005 3:26 am
Peak Purity Problems-Allantoin by usallevyn » Tue Mar 15, 2005 7:23 pm	3	3424	Last post by Uwe Neue Tue Mar 29, 2005 10:49 pm
Preparative HPLC: Suggested Unit? Like to Collaborate? by artie mckim » Mon Mar 28, 2005 4:56 pm	3	3348	Last post by Yury Zelechonok Tue Mar 29, 2005 1:48 pm
Saturation Columns - do they work? by John » Mon Mar 21, 2005 8:48 pm	8	4929	Last post by HW Mueller Tue Mar 29, 2005 7:53 am
Problem in the analysis of sodium valproate by Tequila » Sat Mar 26, 2005 6:15 pm	2	3584	Last post by vimal Mon Mar 28, 2005 10:53 am
Cyclohexane pressure problems with Hitachi pump by tooreck » Thu Feb 24, 2005 5:42 pm	8	4922	Last post by zuabedin Fri Mar 25, 2005 4:46 pm
Resolution/validation/purity . . . . by mtnshawn » Tue Mar 22, 2005 8:23 pm	4	4032	Last post by mtnshawn Thu Mar 24, 2005 10:38 pm
No admission to Waters seminar by Einar Ponten » Thu Mar 10, 2005 4:03 am	4	4004	Last post by kiknos Thu Mar 24, 2005 10:16 am
Interference Peaks by sairam » Wed Mar 23, 2005 8:54 pm	1	3944	Last post by tom jupille Wed Mar 23, 2005 10:39 pm
HPLC of Peptides by putnam » Wed Mar 23, 2005 7:49 pm	0	2996	Last post by putnam Wed Mar 23, 2005 7:49 pm
Using mixtures of solvents as a mobile phase by Tequila » Thu Mar 17, 2005 1:33 pm	10	4793	Last post by HW Mueller Wed Mar 23, 2005 3:55 pm
Unstable baseline and inconsistent peak areas for standards by Marian Minosa-Yertzell » Tue Mar 08, 2005 2:00 pm	6	4796	Last post by syx Wed Mar 23, 2005 12:18 am
Dio Phase column by Perkh » Tue Mar 22, 2005 1:55 pm	3	3155	Last post by Perkh Tue Mar 22, 2005 11:49 pm
Phenyl Fast Flow Column by Bryan Macilko » Mon Mar 21, 2005 3:02 pm	1	3073	Last post by tom jupille Tue Mar 22, 2005 11:16 pm
Effect of column i.d. on efficiency by MG » Wed Mar 09, 2005 11:16 pm	20	13052	Last post by Uwe Neue Tue Mar 22, 2005 10:46 pm
sample pH in anion exchange by MK » Thu Mar 17, 2005 6:34 pm	3	3398	Last post by Mark Tracy Tue Mar 22, 2005 8:24 pm
recovery problem by chemist-pharma » Tue Mar 22, 2005 3:24 am	4	3304	Last post by Mark Tracy Tue Mar 22, 2005 5:31 pm
Guanidine derivatives by JA » Mon Mar 21, 2005 10:51 pm	3	3518	Last post by SIELC_Tech Tue Mar 22, 2005 3:33 pm
UK HPLC Servicing by Chris » Fri Mar 18, 2005 2:19 pm	1	2736	Last post by John Mon Mar 21, 2005 8:39 pm
Strange retention mechanism by John G » Thu Mar 17, 2005 1:03 pm	10	5046	Last post by MG Mon Mar 21, 2005 3:36 pm
increased back pressure by harringg » Thu Mar 17, 2005 10:23 pm	7	4696	Last post by HW Mueller Mon Mar 21, 2005 9:15 am
Regarding particle size method by madhukar » Fri Mar 18, 2005 12:33 pm	1	2817	Last post by tom jupille Sat Mar 19, 2005 6:44 pm
Specifity Testing by usallevyn » Fri Mar 18, 2005 7:32 pm	1	2881	Last post by JA Fri Mar 18, 2005 9:13 pm
Urgent Help !! Recovery Limits for LOQ by Lime » Mon Mar 14, 2005 6:34 am	9	5755	Last post by JA Fri Mar 18, 2005 5:12 pm
enalapril maleate by Holly » Fri Mar 18, 2005 12:28 pm	1	3328	Last post by Uwe Neue Fri Mar 18, 2005 1:39 pm
Noisy baseline with ammonium acetate gradient HPLC method by Rob Burgess » Thu Mar 17, 2005 12:57 pm	3	5682	Last post by Mark Tracy Fri Mar 18, 2005 3:46 am
hplc columns by manar » Tue Mar 15, 2005 5:47 am	8	5369	Last post by Uwe Neue Fri Mar 18, 2005 12:20 am
Can anyone advise on the following issues? by dcobice » Thu Mar 17, 2005 6:28 pm	0	2844	Last post by dcobice Thu Mar 17, 2005 6:28 pm
Analysis of analgesic cream by redzilla » Wed Mar 16, 2005 10:57 pm	4	5576	Last post by JasonC Thu Mar 17, 2005 4:23 pm
Sudan Dye in Chilies by Lynda L » Wed Mar 16, 2005 5:37 pm	3	3787	Last post by Lynda L Thu Mar 17, 2005 3:24 pm
Validation of a method by Tequila » Mon Mar 14, 2005 11:38 am	2	3216	Last post by Lime Thu Mar 17, 2005 6:06 am
Noise in PDA at 190 nm to 230 nm by Angela » Tue Mar 15, 2005 5:28 am	5	3913	Last post by Mark Tracy Thu Mar 17, 2005 2:50 am
Chiral separation by okara » Sat Mar 12, 2005 1:43 am	5	4551	Last post by Ben Buglio Tue Mar 15, 2005 10:12 pm
Derivatization technique for both purines and pyrimidines by MartinG » Tue Mar 15, 2005 4:57 pm	0	3327	Last post by MartinG Tue Mar 15, 2005 4:57 pm

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