Liquid Chromatography

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11906 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	64361	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
UHPLC columns- companies by spr123 » Fri Jan 21, 2011 4:03 pm	3	1878	Last post by JGK Fri Jan 21, 2011 7:21 pm
simple questions about TLC by SKMNUK » Tue Jan 18, 2011 11:28 am	7	2583	Last post by HW Mueller Fri Jan 21, 2011 4:41 pm
An LOQ question during early phase DP purity mth development by darasc0211 » Sat Jan 15, 2011 6:36 am	8	2414	Last post by krickos Fri Jan 21, 2011 6:59 am
ATP (adenosine triphosphate detection by HPLC by mk12 » Tue Jan 18, 2011 10:29 pm	5	3219	Last post by gtvofigo Thu Jan 20, 2011 11:19 pm
Major Inconsistency between identical standards run on HPLC by unclebenjaminjones » Tue Jan 11, 2011 5:55 pm	11	2309	Last post by bisnettrj2 Thu Jan 20, 2011 5:10 pm
Problem in eluting the sample with Amide-80 column in NP by sboopathi » Mon Jan 17, 2011 5:40 pm	14	2535	Last post by HW Mueller Thu Jan 20, 2011 9:22 am
Validation of a non native RPC method by miro2009 » Thu Jan 13, 2011 6:13 pm	1	1476	Last post by freemab222 Thu Jan 20, 2011 7:53 am
ELSD sensitivity by Bangkok34 » Mon Jan 17, 2011 7:59 am	4	2450	Last post by Bangkok34 Thu Jan 20, 2011 7:10 am
Tetrabutylammonium hydroxide(TBAH) interference by colautti » Thu Jan 13, 2011 7:45 am	4	3102	Last post by colautti Thu Jan 20, 2011 4:29 am
using itachi hplc system without the ezchrom by dmond » Wed Jan 19, 2011 2:34 pm	2	2262	Last post by John Lim Thu Jan 20, 2011 3:56 am
deuterium lamp intensities by grumbledook » Tue Jan 18, 2011 12:33 pm	5	3096	Last post by HPLCCONSULT Wed Jan 19, 2011 5:50 pm
Tailing high and increases with injection volume by rgamage » Wed Jan 19, 2011 8:45 am	1	1967	Last post by tom jupille Wed Jan 19, 2011 4:01 pm
continuous peaks with waters 2487 detector by pri6886 » Wed Jan 19, 2011 5:14 am	2	1864	Last post by DR Wed Jan 19, 2011 3:25 pm
Ion pair chromatogarphy by Rowena » Sat Jan 08, 2011 3:53 am	9	4037	Last post by carls Tue Jan 18, 2011 2:53 pm
determination t0 in acclaim trinity p1 by vinhvinh1979g » Mon Jan 17, 2011 3:36 pm	3	1904	Last post by HW Mueller Tue Jan 18, 2011 9:44 am
Simultaneous quantification of vitamin A,E and D by Lorespain » Tue May 25, 2010 5:36 pm	5	2088	Last post by krisradh1432 Tue Jan 18, 2011 2:51 am
CSP for amphetamine & methamphetamine by idle » Tue Jan 18, 2011 1:13 am	0	1483	Last post by idle Tue Jan 18, 2011 1:13 am
High cell current by smartin » Fri Jan 14, 2011 10:51 am	3	1683	Last post by smartin Mon Jan 17, 2011 4:23 pm
Equilibration/resolution problems with new Acquity columns by Nicki-Nitro » Fri Oct 08, 2010 12:04 pm	23	7270	Last post by Nicki-Nitro Mon Jan 17, 2011 11:56 am
tropine content by chromeuser » Sun Nov 29, 2009 2:41 pm	5	2663	Last post by HW Mueller Mon Jan 17, 2011 9:49 am
variation in response of the analyte and internal standard by aydonat » Thu Jan 13, 2011 8:25 am	4	2339	Last post by HW Mueller Mon Jan 17, 2011 9:40 am
shifting retention times by lienl » Thu Jan 13, 2011 9:48 am	2	2111	Last post by lienl Mon Jan 17, 2011 7:43 am
Right way of making manual injection by loverman » Fri Jan 14, 2011 10:10 pm	4	3359	Last post by loverman Sun Jan 16, 2011 11:57 am
have a problem with acclaim trinity p1 by vinhvinh1979g » Sat Jan 15, 2011 6:05 pm	2	2616	Last post by XL Sun Jan 16, 2011 7:10 am
0.2 Micron precolumn filter clogs w/ rotor switching by HPLCEngineer » Fri Jan 14, 2011 5:27 pm	6	2629	Last post by HW Mueller Sat Jan 15, 2011 4:55 pm
the tropine test , HPLCESLD by thenew2011 » Sat Jan 15, 2011 7:46 am	0	1975	Last post by thenew2011 Sat Jan 15, 2011 7:46 am
My expired Dionex Columns any good? by lgchrom » Wed May 12, 2010 3:34 pm	6	3668	Last post by Bruce Hamilton Fri Jan 14, 2011 10:58 pm
Weighting with 1/x^WE, 1/y^WE or 1/s^WE by dresdentl » Sun Dec 26, 2010 6:45 pm	6	3338	Last post by lmh Fri Jan 14, 2011 9:44 am
the most important with me by vinhvinh1979g » Fri Jan 14, 2011 2:48 am	1	1755	Last post by tom jupille Fri Jan 14, 2011 4:43 am
Mobile Phase Recyclers by Paladin » Thu Oct 30, 2008 8:35 pm	14	4886	Last post by greenlab Thu Jan 13, 2011 4:01 pm
HPLC 1090 HBIP card by faris » Thu Jan 13, 2011 2:46 pm	1	1678	Last post by Consumer Products Guy Thu Jan 13, 2011 3:44 pm
LOD based on calibration curve by Edu » Mon Jan 10, 2011 2:08 am	7	5993	Last post by Edu Wed Jan 12, 2011 10:45 pm
magnisum sulphate in my sample by mk12 » Tue Jan 11, 2011 8:04 pm	2	1822	Last post by mk12 Wed Jan 12, 2011 6:58 pm
ATP (adenosine triphosphate detection by HPLC by mk12 » Tue Jan 11, 2011 6:41 pm	3	2310	Last post by Bintang Wed Jan 12, 2011 8:05 am
Analytical Method Transfer Acceptance Criteria by Kimico » Wed Jan 12, 2011 12:39 am	0	1763	Last post by Kimico Wed Jan 12, 2011 12:39 am
Validation of RPC impurity method in terms of peak % by miro2009 » Tue Jan 11, 2011 10:15 am	1	1455	Last post by tom jupille Tue Jan 11, 2011 7:22 pm
Bad reproducility by afzal81 » Sat Jan 08, 2011 3:42 pm	3	1650	Last post by skunked_once Tue Jan 11, 2011 7:05 pm
Rotor seal: vespel vs tefzel by usuchrom » Tue Jan 11, 2011 4:29 pm	1	2661	Last post by Consumer Products Guy Tue Jan 11, 2011 4:50 pm
HPLC Retention Time by Farzana Baksh » Sun Jul 18, 2010 7:29 pm	10	16708	Last post by a4analyst Tue Jan 11, 2011 4:29 pm
solvent-----------HELP!!!!!!!!!! by ossa97 » Mon Jan 10, 2011 7:41 pm	6	1703	Last post by HW Mueller Tue Jan 11, 2011 4:06 pm
Agilent 1290 or Acquity UPLC-MS? by tadah » Fri Jan 07, 2011 10:12 pm	5	3077	Last post by tadah Tue Jan 11, 2011 5:18 am
Not having the desired retention time by afzal81 » Mon Jan 10, 2011 8:05 am	3	1544	Last post by tom jupille Mon Jan 10, 2011 8:05 pm
mobile phase pressure in binary pump by che313 » Fri Jan 07, 2011 4:38 pm	5	1775	Last post by carls Mon Jan 10, 2011 12:16 am
Help me by vinhvinh1979g » Sun Jan 09, 2011 4:23 am	2	1602	Last post by tom jupille Sun Jan 09, 2011 8:36 pm
do you report bracket standard? by flora0975 » Tue Dec 28, 2010 6:19 pm	11	7857	Last post by lmh Sat Jan 08, 2011 11:11 pm
bit off an easy q but i got a mind block!! by latkan » Wed Jan 05, 2011 10:20 pm	1	1535	Last post by Gerhard Kratz Sat Jan 08, 2011 5:31 pm
Sample solvent for method development by annaand » Fri Jan 07, 2011 4:26 pm	1	1467	Last post by tom jupille Fri Jan 07, 2011 5:21 pm
analysis of bovine insulin using HPLC by pokokijau » Thu Jan 06, 2011 8:49 am	2	1860	Last post by tom jupille Thu Jan 06, 2011 3:48 pm
LC Column equivalent selection software or database by yangz00g » Thu Jan 06, 2011 2:50 pm	1	1507	Last post by LCFlo Thu Jan 06, 2011 3:26 pm
HPLC analysis of bupropion by Manar_fawzy » Wed Jan 05, 2011 2:05 am	3	1773	Last post by tom jupille Thu Jan 06, 2011 2:41 am

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