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	83664	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Trouble with repeatability, please help me diagnose! by HAZMAT » Tue Oct 21, 2008 4:02 pm	15	4105	Last post by HAZMAT Mon Nov 03, 2008 3:45 pm
HPLC calibration curve - in general by Norbert » Fri Aug 29, 2008 7:42 am	7	3851	Last post by Norbert Mon Nov 03, 2008 2:33 pm
Residual sum of squares by mojo » Fri Oct 24, 2008 10:27 am	1	2661	Last post by project44 Sun Nov 02, 2008 8:41 pm
Flashing HPLC with NaOH 0.1M by marina1111 » Fri Oct 31, 2008 12:01 pm	2	2494	Last post by marina1111 Sun Nov 02, 2008 6:52 am
Use of THF for gradient Methods by Santosh Gandhi » Thu Oct 30, 2008 5:26 pm	6	2805	Last post by yaoguocan Fri Oct 31, 2008 2:27 am
Column comparison tool by lcrandall » Thu Oct 30, 2008 3:19 pm	3	1894	Last post by lcrandall Thu Oct 30, 2008 4:53 pm
Recovery in validation by zhengmin » Tue Oct 28, 2008 4:39 am	5	2013	Last post by aceto_81 Thu Oct 30, 2008 9:13 am
Is formic acid to corrosive for my HPLC system? by Anna01 » Wed Oct 29, 2008 10:32 pm	1	1483	Last post by Kostas Petritis Wed Oct 29, 2008 10:37 pm
the capacity factor by MestizoJoe » Tue Oct 28, 2008 10:00 pm	5	2470	Last post by rhaefe Wed Oct 29, 2008 3:41 pm
Check Valves by goxy43 » Wed Oct 22, 2008 9:16 am	16	6459	Last post by laserman Wed Oct 29, 2008 12:49 am
Zirchrom Columns by hajdaei » Mon Oct 27, 2008 5:10 pm	2	1764	Last post by mbicking Tue Oct 28, 2008 10:43 pm
report setup in chemstation by cooky » Tue Oct 28, 2008 6:28 pm	2	1589	Last post by zokitano Tue Oct 28, 2008 7:26 pm
Benzalkonium chloride interaction with pharmaceuticals by paroma » Fri Oct 17, 2008 7:24 am	10	6166	Last post by paroma Tue Oct 28, 2008 1:00 pm
Robustness for gradients by michaelcarolus » Mon Oct 20, 2008 5:50 am	4	2011	Last post by michaelcarolus Tue Oct 28, 2008 7:30 am
hplc method validation by Peter H » Wed May 28, 2008 6:29 am	4	3091	Last post by GChad Tue Oct 28, 2008 5:46 am
Removing polymers from the sample by marina1111 » Fri Oct 24, 2008 12:12 pm	5	2163	Last post by marina1111 Tue Oct 28, 2008 3:51 am
Robustness by Santosh Gandhi » Mon Oct 27, 2008 6:14 am	1	1595	Last post by tom jupille Mon Oct 27, 2008 5:20 pm
ammonium formate buffer by Provetech » Mon Oct 27, 2008 8:26 am	1	5025	Last post by zokitano Mon Oct 27, 2008 11:10 am
high pressure on quaternary pump Agilent 1200 by krystynakk » Sat Oct 25, 2008 8:10 am	4	4367	Last post by HPLCCONSULT Sun Oct 26, 2008 10:50 pm
UPLC - reversing a UPLC column by michaelcarolus » Wed Oct 08, 2008 6:05 am	7	3187	Last post by mbicking Sat Oct 25, 2008 12:00 am
Importance of kPa in determining pH of mobile phase by CP » Wed Oct 22, 2008 12:44 pm	7	3283	Last post by lmh Fri Oct 24, 2008 1:47 pm
pka table values by coquim » Fri Aug 22, 2008 1:58 pm	5	2656	Last post by Mikael_LEVI Fri Oct 24, 2008 11:01 am
Let's talk temperature and HPLC w/ prot/peptides by pipettemonkey » Tue Oct 21, 2008 12:22 am	3	2301	Last post by mbicking Fri Oct 24, 2008 1:35 am
validation of method:drug substance and drug product by scio2 » Thu Oct 23, 2008 3:11 am	3	1557	Last post by adam Fri Oct 24, 2008 12:13 am
Fluctuating pressure by thohry » Thu Oct 23, 2008 4:59 am	2	1851	Last post by Consumer Products Guy Thu Oct 23, 2008 6:07 pm
Stainless frits seized to the end fittings... Help! by dkreller » Tue Oct 21, 2008 9:22 pm	3	1820	Last post by dkreller Wed Oct 22, 2008 9:07 pm
HELP: UV Database Needed by kanal » Wed Oct 22, 2008 7:38 pm	1	1555	Last post by rhaefe Wed Oct 22, 2008 8:50 pm
Silica HIgh Temperature Stability? by Alireza » Tue Oct 21, 2008 3:58 pm	6	1811	Last post by Uwe Neue Wed Oct 22, 2008 4:50 pm
GC carryover by KRichardson » Wed Oct 22, 2008 10:26 am	1	1600	Last post by krickos Wed Oct 22, 2008 1:21 pm
Analyte lost on PL-Sax anion exchange by pipettemonkey » Tue Oct 21, 2008 12:11 am	1	2419	Last post by goxy43 Wed Oct 22, 2008 11:34 am
Handling of waste from Radio-HPLC. by chayyl » Wed Oct 22, 2008 6:21 am	4	3006	Last post by lmh Wed Oct 22, 2008 11:09 am
S/N Determination using Empower Software by Wendy38 » Tue Aug 12, 2008 12:02 pm	31	21740	Last post by Slammy1 Tue Oct 21, 2008 5:23 pm
How to weigh a higroscopic substance by inge » Mon Oct 20, 2008 6:48 am	5	6902	Last post by Flappytango Tue Oct 21, 2008 1:51 pm
Shifting Retention times/Peak areas by pgdow2 » Tue Oct 21, 2008 12:14 pm	2	1621	Last post by pgdow2 Tue Oct 21, 2008 1:41 pm
extraction from petrolatum by scio2 » Fri Oct 17, 2008 4:12 am	4	2458	Last post by scio2 Mon Oct 20, 2008 11:03 pm
How to make a peak sharper by ym3142 » Thu Oct 09, 2008 2:04 pm	15	12546	Last post by AdrianF Mon Oct 20, 2008 10:33 pm
Advantages and disadvantages for HILIC columns .... by JOCAPEN » Wed Oct 01, 2008 1:52 pm	20	6837	Last post by Bryan Evans Mon Oct 20, 2008 1:12 pm
particle size as function of acceleration (centrifugation) by Hollow » Fri Oct 17, 2008 8:50 am	3	1919	Last post by Hollow Sun Oct 19, 2008 5:15 pm
sodium pyrosulfite's problem by Austin » Wed Oct 08, 2008 7:55 am	1	1537	Last post by XL Sun Oct 19, 2008 3:49 am
Separation of methoxypropylamine and morpholine... by IC_Gal » Tue Oct 14, 2008 7:48 pm	9	2962	Last post by maria.rey Fri Oct 17, 2008 6:04 pm
IEX or HILIC for peptides - any experience? by aschultze » Tue Sep 16, 2008 7:47 pm	20	4793	Last post by Kostas Petritis Fri Oct 17, 2008 4:31 pm
acrylic acid polymer with GPC by Koen Hollebekkers » Fri Oct 17, 2008 1:10 pm	0	1494	Last post by Koen Hollebekkers Fri Oct 17, 2008 1:10 pm
2-micron and sub 2-micron Ion exchange columns?? by rick1112 » Thu Oct 16, 2008 3:40 am	3	1572	Last post by Noser222 Thu Oct 16, 2008 5:27 pm
What causes peptides to have longer retention on a C4 vs C18 by pipettemonkey » Wed Oct 15, 2008 1:01 am	10	2714	Last post by Kostas Petritis Thu Oct 16, 2008 4:08 pm
Help: HP 1090 with a Waters 410 RI by dalehramsa » Tue Oct 14, 2008 5:49 pm	6	1941	Last post by Bruce Hamilton Wed Oct 15, 2008 8:24 pm
Agilent Column Selection Valve by bmoritz » Wed Oct 08, 2008 9:04 pm	4	2504	Last post by HPLCCONSULT Wed Oct 15, 2008 8:20 pm
More shallow the gradient, the better the resolution? by pipettemonkey » Fri Oct 10, 2008 5:56 pm	10	11525	Last post by HW Mueller Wed Oct 15, 2008 1:53 pm
Choosing the right column, mobile phase for peptide purifica by pipettemonkey » Wed Oct 15, 2008 1:35 am	2	1609	Last post by pipettemonkey Wed Oct 15, 2008 2:37 am
Gentamycin EP analysis by aceto_81 » Tue Oct 14, 2008 6:18 am	0	1411	Last post by aceto_81 Tue Oct 14, 2008 6:18 am
high temperature reverse phase column?? by rick1112 » Thu Oct 09, 2008 4:16 am	8	2123	Last post by Kostas Petritis Mon Oct 13, 2008 4:50 pm

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