Liquid Chromatography

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Ion Chromatography Discussions about IC and related topics Topics: 399	399	1500	Last post Re: Inquiry: Replacement hous… by cpell Thu Nov 13, 2025 5:02 pm
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11911 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	76818	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Protein analysis by HPLC by Perachiotti Anna » Thu Feb 03, 2005 9:00 am	14	6735	Last post by Uwe Neue Thu Feb 10, 2005 12:13 am
Ion pairing reagent interactions by Ricardinio » Tue Feb 08, 2005 5:26 pm	5	4656	Last post by Chris Pohl Wed Feb 09, 2005 8:00 pm
Leaking in PAD cell on Dionex system by Marie-Helene Crete » Tue Feb 08, 2005 4:09 pm	2	3577	Last post by Petr Jandik Wed Feb 09, 2005 12:53 am
Reporting Impurities by Chris » Tue Jan 25, 2005 7:55 pm	12	7787	Last post by Chris Tue Feb 08, 2005 4:38 pm
Peptide analysis by ELSD by Ryans17 » Tue Feb 08, 2005 2:55 pm	0	2939	Last post by Ryans17 Tue Feb 08, 2005 2:55 pm
Clonidine by electrochemical detection? by Ann » Mon Jan 24, 2005 3:20 pm	7	4462	Last post by Ann Tue Feb 08, 2005 9:48 am
No reproducibility with stadards solvent with methanol-water by juaant » Thu Jan 27, 2005 8:54 am	7	4550	Last post by juaant Tue Feb 08, 2005 7:26 am
Methof for L-Tyrosine and Lactate calcicum by juaant » Mon Feb 07, 2005 7:46 pm	2	3642	Last post by juaant Tue Feb 08, 2005 6:17 am
Regeneration techniques for HILIC silica columns by Kazimierz » Fri Jan 21, 2005 1:17 pm	13	9600	Last post by crlar Mon Feb 07, 2005 10:47 pm
Any problems/impurities with TFA? by redzilla » Fri Feb 04, 2005 5:40 pm	6	6216	Last post by dcobice Mon Feb 07, 2005 6:57 pm
analysis of N-(4,4'-Difluorobenzhydryl)piperazine by HPLC by zhengmin » Fri Feb 04, 2005 2:29 pm	4	3436	Last post by maris Sun Feb 06, 2005 7:02 am
TLC Separation of Carbohydrates by Benjamin » Mon Jan 31, 2005 2:57 pm	4	4720	Last post by maris Sat Feb 05, 2005 7:58 am
anion exchange problem by MK » Mon Jan 31, 2005 7:38 pm	2	3177	Last post by MK Fri Feb 04, 2005 7:23 pm
Baseline problems with a NH4H2PO4 Buffer by St. Torres » Wed Dec 01, 2004 3:30 pm	10	7031	Last post by HW Mueller Fri Feb 04, 2005 5:17 pm
Peakbroadening of Peptide by Alex » Mon Jan 31, 2005 1:32 pm	22	9826	Last post by MG Fri Feb 04, 2005 2:32 pm
Selectivty of Neutral Compounds in Mixed Mode Separations by Rob Burgess » Wed Jan 19, 2005 2:31 pm	31	12322	Last post by Einar Ponten Thu Feb 03, 2005 9:56 pm
HILIC column for small molecules? by smiley » Mon Jan 24, 2005 7:49 pm	28	10034	Last post by Chris Pohl Thu Feb 03, 2005 4:22 pm
HP1050 autosampler configuration help by newton69 » Thu Feb 03, 2005 2:38 pm	0	2987	Last post by newton69 Thu Feb 03, 2005 2:38 pm
imp by nihal » Thu Jan 27, 2005 8:35 pm	4	3721	Last post by kiknos Thu Feb 03, 2005 8:30 am
"frontal loading"? by kiknos » Tue Feb 01, 2005 1:26 pm	4	3728	Last post by kiknos Thu Feb 03, 2005 7:52 am
How to understand the "equivalent" in HPLC COLUMN by zhengmin » Fri Jan 28, 2005 5:36 am	9	7107	Last post by tom jupille Thu Feb 03, 2005 4:23 am
separation of ammonium from diammonium compounds by schnippy » Mon Jan 31, 2005 7:27 pm	1	2716	Last post by Chris Pohl Thu Feb 03, 2005 2:00 am
Help! - Negative Peaks by Chris » Thu Jan 27, 2005 8:03 pm	9	4464	Last post by Chris Pohl Thu Feb 03, 2005 1:50 am
Ion exchange SPE by JA » Wed Feb 02, 2005 2:20 am	4	3470	Last post by Uwe Neue Thu Feb 03, 2005 1:28 am
Peak overlap with new column by redzilla » Wed Feb 02, 2005 6:28 pm	7	4667	Last post by ravi Wed Feb 02, 2005 10:07 pm
how to overcome low recovery? by chemist_PA » Mon Jan 24, 2005 8:55 pm	8	4622	Last post by Uwe Neue Wed Feb 02, 2005 9:29 pm
HPLC Troubles by Sallybeetle » Mon Jan 24, 2005 9:26 pm	7	5660	Last post by Sallybeetle Wed Feb 02, 2005 7:11 pm
Linearity Validation - Best Practice? by Rob Burgess » Tue Feb 01, 2005 12:20 pm	5	3726	Last post by Consumer Products Guy Wed Feb 02, 2005 2:46 pm
Validation by amirchem » Thu Jan 20, 2005 1:41 pm	7	6130	Last post by Sallybeetle Tue Feb 01, 2005 5:48 pm
amino column : reverse or normal ? by fa » Tue Feb 01, 2005 9:24 am	1	3156	Last post by tom jupille Tue Feb 01, 2005 2:52 pm
Refractive Index Detectors by Anne » Thu Dec 16, 2004 5:49 am	11	7099	Last post by Rob Burgess Tue Feb 01, 2005 12:09 pm
actual peak collection before the PDA peak --?? by e » Mon Jan 31, 2005 4:37 pm	1	2959	Last post by JA Mon Jan 31, 2005 8:52 pm
buffer: NaOAc, pH6.8 ? by kiknos » Thu Jan 27, 2005 6:48 am	5	4285	Last post by kiknos Mon Jan 31, 2005 3:58 am
Tamsulosin hydrochloride related substances by mahesh chokshi » Sat Jan 29, 2005 9:09 am	0	3205	Last post by mahesh chokshi Sat Jan 29, 2005 9:09 am
Max. ion pair conc. by Rob Burgess » Mon Jan 24, 2005 1:51 pm	3	3396	Last post by Einar Ponten Fri Jan 28, 2005 10:56 pm
pH effect on Evaporative Light Scattering? by Ryans17 » Thu Jan 27, 2005 3:54 pm	5	3895	Last post by Bill Tindall Fri Jan 28, 2005 9:12 pm
Origin and generic dugs by nihal » Thu Jan 27, 2005 8:26 pm	1	2968	Last post by maris Fri Jan 28, 2005 5:34 pm
Bioprocess rig flow deviations-unexplained by alfredo » Thu Jan 27, 2005 10:51 pm	0	2936	Last post by alfredo Thu Jan 27, 2005 10:51 pm
imp by nihal » Thu Jan 27, 2005 8:02 pm	0	2792	Last post by nihal Thu Jan 27, 2005 8:02 pm
Analysis of Phospholipids by HPLC by kweston » Tue Jan 11, 2005 9:33 pm	2	3294	Last post by Ryans17 Thu Jan 27, 2005 4:09 pm
HPLC method for NTCB in the blood-plasma by Kazimierz » Wed Jan 26, 2005 7:58 pm	0	2863	Last post by Kazimierz Wed Jan 26, 2005 7:58 pm
preparative loadability of an ion pair by JA » Sat Jan 22, 2005 7:51 pm	8	4451	Last post by Uwe Neue Wed Jan 26, 2005 4:59 pm
Column to enrich phophoryl. peptides by SMC » Wed Jan 19, 2005 1:48 pm	2	3140	Last post by HM Wed Jan 26, 2005 11:04 am
Base line problems w/ TEAA buffer and ACN gradient by nwashburn » Wed Jan 19, 2005 1:52 pm	5	4898	Last post by nwashburn Tue Jan 25, 2005 5:31 pm
HPLC contamination by wenchenluo » Wed Jan 19, 2005 7:43 pm	4	5338	Last post by irene_wu Tue Jan 25, 2005 3:07 pm
how to handle carbon load in separation by smiley » Sat Jan 22, 2005 4:53 am	8	5494	Last post by Uwe Neue Mon Jan 24, 2005 11:07 pm
Equation for determining LOD??? by Ann » Thu Dec 16, 2004 1:56 pm	8	6305	Last post by Sallybeetle Mon Jan 24, 2005 9:14 pm
Calibration procedure for RI detector by bhaskarac » Wed Jan 19, 2005 6:26 am	1	4842	Last post by Sallybeetle Mon Jan 24, 2005 8:39 pm
LC-UV backpressure by irene_wu » Thu Jan 20, 2005 4:15 pm	6	4222	Last post by JA Mon Jan 24, 2005 7:53 pm
retention time related guard column by irene_wu » Mon Jan 24, 2005 4:28 pm	1	3071	Last post by tom jupille Mon Jan 24, 2005 7:08 pm

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