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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11915 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	83448	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
UPLC System overpressure...Problem with system or column? by atw9 » Thu Oct 25, 2012 9:23 am	16	9171	Last post by carls Sat Oct 27, 2012 2:19 am
Baseline drift when use THF by gys25016 » Tue Sep 18, 2012 1:03 am	3	3108	Last post by carls Sat Oct 27, 2012 2:12 am
TLC vs HPTLC (Costs) by wptmdoorn » Fri Oct 26, 2012 4:30 pm	0	2413	Last post by wptmdoorn Fri Oct 26, 2012 4:30 pm
G1313/1329 Belt Tension by akthmps » Thu Oct 25, 2012 11:16 pm	2	2823	Last post by akthmps Fri Oct 26, 2012 4:01 pm
Resetting G1313 Sampler Alignment by akthmps » Thu Oct 25, 2012 11:20 pm	1	2105	Last post by Zmeevic Fri Oct 26, 2012 10:38 am
Improving extraction efficiency by ankurhplc » Fri Oct 26, 2012 3:51 am	1	4008	Last post by danko Fri Oct 26, 2012 7:50 am
Reverse to normal on HPLC by urox11 » Wed Oct 24, 2012 3:43 pm	1	2247	Last post by bisnettrj2 Thu Oct 25, 2012 3:58 am
Why are my check valves dying? by Mattias » Mon Aug 06, 2012 12:21 pm	35	9044	Last post by juddc Wed Oct 24, 2012 6:26 pm
PDA wavelength Scan report on Empower by StephenO » Wed Oct 24, 2012 2:30 pm	2	3344	Last post by fareedtayyeb Fri Apr 05, 2013 9:15 am
Help deciding on a HPLC to choose by soukuprj » Mon Oct 22, 2012 6:11 pm	3	2305	Last post by ACrawshaw Wed Oct 24, 2012 9:56 am
Inline filters compatible with Dionex columns? by Nell001 » Tue Oct 23, 2012 2:58 am	3	1921	Last post by Nell001 Tue Oct 23, 2012 9:44 pm
HPLC method suggestion needed. by rrm1987 » Wed Oct 17, 2012 5:39 am	11	2366	Last post by Vlad Orlovsky Tue Oct 23, 2012 7:16 pm
HILIC and RP - For Analysis of a Carbohydrate Polymer by adam » Sun Oct 21, 2012 11:12 pm	11	3614	Last post by Andy Alpert Tue Oct 23, 2012 4:29 pm
Urgent request by fareedtayyeb » Tue Oct 23, 2012 10:43 am	1	2000	Last post by DR Tue Oct 23, 2012 2:56 pm
Pressure issue with acetonitrile gradient by Perreman » Mon Oct 22, 2012 2:15 pm	2	2242	Last post by Perreman Tue Oct 23, 2012 2:47 pm
interferon alfa-2b analysis by HPLC by balian » Tue Oct 23, 2012 1:40 pm	0	2341	Last post by balian Tue Oct 23, 2012 1:40 pm
Using prep HPLC for ion exchange by thiazole » Tue Oct 16, 2012 9:02 pm	5	3381	Last post by Vlad Orlovsky Mon Oct 22, 2012 3:15 pm
Insulin peak movement within a run by Nikki » Fri Oct 19, 2012 1:53 pm	3	1997	Last post by Nikki Mon Oct 22, 2012 7:15 am
Multi-Angle Light Scattering VS. LC-MS (MALDI) by flortzweich » Fri Oct 19, 2012 3:25 pm	1	2091	Last post by CE Instruments Mon Oct 22, 2012 7:15 am
HPLC method for nitrosoamines by mkpasha » Sat Oct 20, 2012 3:44 pm	1	2042	Last post by tom jupille Sat Oct 20, 2012 5:13 pm
analysis of boric acid by LC-MS by emanuele.scollo » Sat Oct 20, 2012 8:54 am	6	7621	Last post by JMB Fri May 02, 2014 5:47 pm
Column particle size difference by syk10148 » Tue Oct 16, 2012 12:22 am	6	2936	Last post by DJ Sat Oct 20, 2012 6:21 am
extra column band spreading by jiangds06 » Wed Oct 17, 2012 4:11 pm	2	1849	Last post by tom jupille Sat Oct 20, 2012 3:29 am
Falling down baseline problem !!!! by ChromaMaster » Wed Oct 17, 2012 7:28 pm	3	1793	Last post by danko Fri Oct 19, 2012 10:58 pm
Easy Ion Pair question by Mike H. » Wed Oct 17, 2012 3:25 pm	6	2494	Last post by danko Fri Oct 19, 2012 10:49 pm
Detection of Polymers with ELSD (or CAD) by adam » Tue Oct 16, 2012 11:35 pm	5	2494	Last post by adam Fri Oct 19, 2012 4:19 pm
Detector noise by StephenO » Tue Oct 16, 2012 9:18 am	2	1994	Last post by StephenO Fri Oct 19, 2012 2:27 pm
Surfactant and Silicone Issues by arachne182 » Wed Jul 18, 2012 6:16 pm	5	2270	Last post by zheyin Fri Oct 19, 2012 1:41 pm
BEH Column high pressure uplc by seamoro » Fri Oct 19, 2012 3:01 am	3	2116	Last post by unregistered Fri Oct 19, 2012 12:35 pm
Can I expect fluorescence? by Mattias » Thu Oct 18, 2012 1:13 pm	5	1876	Last post by danko Fri Oct 19, 2012 11:42 am
RT Variation by sharma » Wed Oct 17, 2012 11:51 am	5	1785	Last post by DJ Fri Oct 19, 2012 5:38 am
On-column degradation gets worse during sequence by Mattias » Thu Oct 11, 2012 5:39 am	9	2531	Last post by zokitano Thu Oct 18, 2012 2:31 pm
Late Peaks by joshbostinc » Mon Oct 15, 2012 3:14 pm	5	2132	Last post by littleman Thu Oct 18, 2012 1:07 pm
Peak Area Waters 2695 by joshbostinc » Mon Oct 15, 2012 3:16 pm	9	3003	Last post by joshbostinc Thu Oct 18, 2012 11:16 am
HPLC method for diheptyl succinate by pokale2600 » Tue Oct 16, 2012 8:53 am	3	2567	Last post by Vlad Orlovsky Thu Oct 18, 2012 10:42 am
Anyone use Alexa Fluoro or similar reagents for HPLC/FLD? by Hurricane » Wed Oct 17, 2012 8:08 pm	0	2306	Last post by Hurricane Wed Oct 17, 2012 8:08 pm
TLC solvent help by dev_d1 » Wed Oct 17, 2012 12:31 pm	1	2138	Last post by tom jupille Wed Oct 17, 2012 6:55 pm
Narrow Bore Column and Injection Volume by Bripirate » Tue Oct 16, 2012 7:47 pm	1	2176	Last post by tom jupille Wed Oct 17, 2012 6:47 pm
Column backpressure by parya_m » Wed Sep 12, 2012 2:21 pm	2	2028	Last post by tom jupille Wed Oct 17, 2012 6:36 pm
Question about Dimenhydramine related substances test method by syk10148 » Wed Oct 17, 2012 1:54 am	3	2192	Last post by Vlad Orlovsky Wed Oct 17, 2012 4:18 pm
Number of theoretical plates (WATERS Empower) by guigsh » Wed Oct 17, 2012 9:11 am	2	4426	Last post by AA Wed Oct 17, 2012 11:58 am
Glycol ethers by chromatography by gozde » Tue Oct 16, 2012 8:47 am	6	2531	Last post by gozde Wed Oct 17, 2012 6:15 am
Internal standards use! by an_k » Tue Oct 02, 2012 9:09 am	13	4111	Last post by an_k Tue Oct 16, 2012 2:08 pm
GPC of hardly soluble polymer by push » Wed Oct 10, 2012 2:20 pm	4	2246	Last post by gstaepels Tue Oct 16, 2012 7:39 am
What PM and Qualification service to use? by zheyin » Wed Sep 26, 2012 12:35 pm	8	2144	Last post by zheyin Mon Oct 15, 2012 2:13 pm
Assay of D3 as per British pharmacopeia by ubhanu.pharma » Mon Oct 15, 2012 1:32 pm	1	1933	Last post by prepcolumn Mon Oct 15, 2012 1:58 pm
Validation of ID method (HPLC) by Mattias » Mon Oct 15, 2012 12:04 pm	3	3645	Last post by prepcolumn Mon Oct 15, 2012 1:47 pm
Can I take Amino acid powder instead of protein powder? by CindyHang » Mon Oct 15, 2012 11:25 am	1	1708	Last post by danko Mon Oct 15, 2012 12:38 pm
Silica Column by syk10148 » Sun Oct 14, 2012 9:51 pm	1	1607	Last post by bisnettrj2 Mon Oct 15, 2012 1:11 am
HPLC Calibration requirements by StephenO » Fri Oct 12, 2012 1:52 pm	4	3112	Last post by DR Mon Oct 15, 2012 12:40 am

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