Liquid Chromatography

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11908 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	62201	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Decrease in signal during repeatability test by lo8864324 » Tue Jun 02, 2015 7:23 am	6	4014	Last post by Kreall Fri Jun 26, 2015 6:27 am
Reporting Impurities by michaelcarolus » Wed Jun 24, 2015 6:15 pm	4	6696	Last post by michaelcarolus Thu Jun 25, 2015 2:24 pm
Poor Precision when using Poroshell column... by Mike H. » Thu Jun 18, 2015 12:22 pm	7	3783	Last post by mattmullaney Thu Jun 25, 2015 10:03 am
paracetamol sample preparations by ydna6969 » Thu Jun 04, 2015 5:58 am	3	3171	Last post by bunnahabhain Wed Jun 24, 2015 8:54 am
Possible pump problem on an Agilent 1200 by DevC » Mon Jun 22, 2015 4:55 pm	2	3309	Last post by Consumer Products Guy Tue Jun 23, 2015 2:45 pm
Antek 8060 CLND issues by BillH » Wed Apr 01, 2015 2:35 pm	7	4645	Last post by lu_yane@hotmail.com Mon Jun 22, 2015 3:59 pm
Waters 996 PDA Troubleshooting by khykes » Fri Feb 13, 2015 7:40 pm	11	15448	Last post by HbJ Mon Jun 22, 2015 6:14 am
Perplexing gradient shift after maintenance by Arne » Wed Jun 17, 2015 1:55 am	5	3482	Last post by Arne Fri Jun 19, 2015 3:32 pm
Clean IPC Column by Sneezy » Tue Jun 16, 2015 1:34 am	7	4209	Last post by Gerhard Kratz Fri Jun 19, 2015 8:52 am
Agilent 1260 RID Temp problem by chc1027 » Fri May 22, 2015 4:40 pm	3	3283	Last post by chc1027 Tue Jun 16, 2015 8:21 pm
Agilent 1100 or Thermo 3000 by Oatsandbeans » Wed Jun 10, 2015 2:26 pm	3	2722	Last post by Oatsandbeans Tue Jun 16, 2015 2:26 pm
Low results with new method by artsjeroen » Tue Jun 16, 2015 8:43 am	7	3050	Last post by artsjeroen Tue Jun 16, 2015 2:06 pm
Changing between mobile phases by mezman129 » Mon Jun 15, 2015 12:59 pm	5	4478	Last post by mezman129 Mon Jun 15, 2015 3:13 pm
OQ/PQ of the pump: proportioning ripple by LCFan » Sun Jun 14, 2015 7:11 pm	2	4533	Last post by LCFan Mon Jun 15, 2015 12:00 pm
Ion Exchange resin- expose to process water by chetan_m43 » Sun Jun 07, 2015 4:47 pm	5	3612	Last post by danko Mon Jun 15, 2015 7:58 am
Dimethicone test by Jumpshooter » Mon May 03, 2010 7:26 pm	25	14708	Last post by ESIBAL Sat Jun 13, 2015 12:24 am
Gradient of Flow-Rate is Suitable? by capozzi_brazil » Thu Jun 11, 2015 11:01 am	5	4516	Last post by lmh Fri Jun 12, 2015 4:38 pm
testimony on Imtakt Intrada Amino Acid column methods by Arne » Mon Jun 08, 2015 5:17 pm	4	3926	Last post by mattmullaney Thu Jun 11, 2015 4:48 pm
Linearity problem using HPLC-ECD by artsjeroen » Tue Apr 21, 2015 9:27 am	3	2855	Last post by Markus Laeubli, Metrohm Thu Jun 11, 2015 5:00 am
EZChrom LOD Calculation by Fredjmoreira » Wed Jun 10, 2015 7:32 pm	0	3700	Last post by Fredjmoreira Wed Jun 10, 2015 7:32 pm
Best mobile phase for Catecholamine HPLC by Cshahr » Wed Jun 03, 2015 5:21 pm	2	2846	Last post by mattmullaney Wed Jun 10, 2015 10:24 am
bus LAC/E could not be booted by sarcidia » Mon Jun 08, 2015 8:19 pm	3	5604	Last post by scottmshepard3 Mon Mar 11, 2019 3:38 pm
waters E2695 normal backpressure without column by thorn » Wed Jun 03, 2015 9:00 pm	3	4356	Last post by thorn Tue Jun 09, 2015 4:42 am
Homemade TLC Plate - need instructions by jmcsmith » Fri Jan 22, 2010 2:22 am	12	14958	Last post by aalbre Sat Jun 06, 2015 10:29 am
How to remove NaCl during HPLC analysis by sabikh » Tue Jun 02, 2015 5:54 pm	3	4834	Last post by danko Fri Jun 05, 2015 9:59 am
Help regarding baseline problem by sathyavrathan » Thu Jun 04, 2015 11:12 am	6	3124	Last post by danko Fri Jun 05, 2015 9:44 am
Povidone K29/32 by stdev » Fri May 22, 2015 7:37 pm	1	2973	Last post by James_Ball Thu Jun 04, 2015 6:55 pm
Demonstration of specificity by jayroseville58 » Wed May 20, 2015 9:53 am	5	3026	Last post by danko Thu Jun 04, 2015 8:13 am
ion pairing chromatography by sam8707v » Tue Jun 02, 2015 3:55 pm	4	2767	Last post by sam8707v Wed Jun 03, 2015 2:42 pm
Question about C-18 extraction disks by Mike H. » Tue Jun 02, 2015 8:04 pm	2	2587	Last post by Mike H. Wed Jun 03, 2015 12:59 pm
Two L-menthol peaks with RP C8 150 mm x 4,6 mm by Nahru » Tue May 26, 2015 8:38 am	5	3248	Last post by mattmullaney Wed Jun 03, 2015 9:12 am
Advances in Environmental Analysis eSeminar by CF - David Hills » Tue Jun 02, 2015 8:38 am	0	3656	Last post by CF - David Hills Tue Jun 02, 2015 8:38 am
UltiMate 3000 WPS-3000 autosampler needle replacement proble by Johte » Thu May 28, 2015 12:03 pm	3	5800	Last post by Johte Fri May 29, 2015 12:44 pm
HPLC separation of related halogenated aromatic, any one?? by cathj » Thu May 07, 2015 5:10 am	15	8882	Last post by cathj Fri May 29, 2015 2:36 am
Method development by brasileo_88 » Mon May 18, 2015 11:21 am	7	3884	Last post by artsjeroen Thu May 28, 2015 7:06 am
shift in retention time by sga » Tue May 26, 2015 10:31 pm	2	2992	Last post by kubowicz.tomasz Wed May 27, 2015 5:51 am
Malic acid and l-carnitine by qfiviera » Tue May 26, 2015 5:38 pm	2	3219	Last post by Peggsy Tue May 26, 2015 11:18 pm
Increasing peak areas for subsequent filtered aliquots by Crystalline » Mon Apr 27, 2015 9:22 pm	3	3338	Last post by danko Sun May 24, 2015 9:24 am
How to measure the I.D. of a capillary tube? by kaavie0801 » Tue May 19, 2015 8:56 am	6	5882	Last post by kaavie0801 Fri May 22, 2015 3:14 am
Syringes for filtering during sample preparation by shadow » Thu May 21, 2015 1:49 pm	8	3657	Last post by Peter Apps Thu May 21, 2015 8:32 pm
Problem with determination of Diclazuril by psyclones » Wed May 20, 2015 8:01 pm	1	2838	Last post by tom jupille Thu May 21, 2015 6:40 pm
Journals for donation by chrsdrake » Thu May 21, 2015 2:38 pm	0	3015	Last post by chrsdrake Thu May 21, 2015 2:38 pm
RID problem by qfiviera » Tue May 12, 2015 3:48 pm	8	3787	Last post by uzman Wed May 20, 2015 5:55 pm
Hydroquinone as an Inhibitor by brendandamm » Wed May 13, 2015 7:25 pm	7	3650	Last post by bunnahabhain Tue May 19, 2015 12:44 pm
Paraquat/Diquat on HILIC by axmo » Wed May 13, 2015 8:42 am	2	3736	Last post by HippyLabRat Mon May 18, 2015 9:23 pm
~100mAU blocks in UV-Vis on Dionex Ultimate 3000 by M Knight » Thu May 14, 2015 9:39 am	4	3500	Last post by chrsdrake Mon May 18, 2015 3:31 pm
Low plate counts of analyte peaks for EP monogrpah by sisay » Thu Apr 30, 2015 6:13 am	5	4630	Last post by sisay Mon May 18, 2015 1:15 pm
how to remove KH2PO4 and cetrimide from c8 column by joepaul » Fri May 08, 2015 7:22 am	4	3573	Last post by Kreall Mon May 18, 2015 10:53 am
Packing Fused Silica by Johte » Fri May 15, 2015 11:31 pm	0	3353	Last post by Johte Fri May 15, 2015 11:31 pm
Shimadzu HPLC by Shana » Thu May 14, 2015 4:49 pm	2	3988	Last post by Shana Fri May 15, 2015 12:29 am

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