Liquid Chromatography

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11906 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	62663	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
Help with Gradients by JHC1953 » Wed Jan 22, 2014 9:43 pm	2	3730	Last post by HPLCaddict Thu Jan 23, 2014 12:02 pm
determination of fat soluble vitamins by HPLC by eli Chemist » Fri Dec 27, 2013 5:06 pm	4	3129	Last post by eli Chemist Tue Jan 21, 2014 5:23 pm
Chemstation version B.03.02/Windows 7 by mrstratford » Tue Jan 21, 2014 2:52 pm	1	4207	Last post by varossf Wed Jan 22, 2014 8:35 pm
master-slave on P.E. series 200 pump? by Alp » Tue Jan 21, 2014 3:40 am	0	2894	Last post by Alp Tue Jan 21, 2014 3:40 am
Over- or under-reporting peak area? by Ste_C » Wed Jan 15, 2014 5:04 pm	7	3684	Last post by HPLCaddict Mon Jan 20, 2014 8:11 pm
Request for info regarding part. No of pump/metering drive by svetlinahristova » Mon Jan 20, 2014 12:29 pm	0	2738	Last post by svetlinahristova Mon Jan 20, 2014 12:29 pm
Replacing a stepper motor on a Waters 2695 pump by jbozell » Fri Jan 17, 2014 10:39 pm	3	2514	Last post by uzman Sun Jan 19, 2014 2:36 pm
Cisparide HPLC Analysis by jmmunson » Fri Oct 25, 2013 3:35 pm	4	3118	Last post by HPLCaddict Sat Jan 18, 2014 6:39 pm
Waters 2487 Screen Has no Text by bmoritz » Thu Jan 16, 2014 4:42 pm	3	2853	Last post by uzman Fri Jan 17, 2014 7:18 pm
"Lost Prime" with fluid in the lines?? by Bunsen Honeydew » Tue Dec 17, 2013 10:30 am	9	5196	Last post by juddc Fri Jan 17, 2014 5:05 am
Salt required in SEC? by separation » Thu Jan 16, 2014 10:45 pm	1	2058	Last post by tom jupille Thu Jan 16, 2014 11:49 pm
Waters Acquity hardware issues. (NOT H Class) by Metrology » Wed Jul 17, 2013 1:25 pm	13	5428	Last post by aceto_81 Thu Jan 16, 2014 6:36 am
Evaporative LIght Scattering by bdhedhy19 » Wed Dec 18, 2013 6:49 pm	6	2825	Last post by bdhedhy19 Thu Jan 16, 2014 5:29 am
Huge troubles of high pressure in HPLC by clo » Tue Jan 14, 2014 8:52 am	2	2216	Last post by Chris0000 Thu Jan 16, 2014 5:24 am
carry-over durign Vitamin A analysis - only palmitate? by Arne » Mon Dec 23, 2013 7:28 am	2	2487	Last post by ph/Amr Tarek Wed Jan 15, 2014 10:21 pm
Agilent 1100 Quaternary pump gradient issue by bunnahabhain » Mon Jan 06, 2014 4:18 pm	7	5207	Last post by bunnahabhain Wed Jan 15, 2014 8:11 am
Solvent / MP Effects by Rdsxbaseball » Mon Jan 13, 2014 9:50 pm	3	2286	Last post by Rdsxbaseball Tue Jan 14, 2014 11:04 pm
Analysis of sodium ascorbyl phosphate using HPLC by saikorem » Wed Dec 18, 2013 5:23 am	7	5075	Last post by ph/Amr Tarek Tue Jan 14, 2014 5:29 pm
Vitamin D on HPLC by kristind858 » Mon Oct 15, 2012 3:59 pm	13	9320	Last post by kristind858 Tue Jan 14, 2014 4:33 pm
Perchloric Acid in Mobile Phase by JHC1953 » Fri Dec 13, 2013 9:59 pm	6	10060	Last post by ph/Amr Tarek Mon Jan 13, 2014 9:44 pm
L-Cysteine by rojitea » Tue Dec 17, 2013 9:17 am	4	2504	Last post by MSCHemist Mon Jan 13, 2014 9:25 pm
ZIC-HILIC for the analysis of organic acids by dkloos » Mon Jan 13, 2014 2:44 pm	2	3260	Last post by Vlad Orlovsky Mon Jan 13, 2014 9:20 pm
buffers and salt pair buffers by MikeT » Mon Jan 06, 2014 8:04 pm	7	9052	Last post by lmh Wed Jan 22, 2014 10:05 am
chromeleon 7 how to export AIA(cdf) by hqs_hua » Sun Jan 12, 2014 12:10 pm	4	6772	Last post by sbrand Mon May 09, 2016 9:04 am
time management by jiangds06 » Thu Jan 09, 2014 4:51 pm	6	2883	Last post by DR Fri Jan 10, 2014 6:01 pm
Flow Accuracy verification by StephenO » Fri Jan 10, 2014 5:11 pm	0	2532	Last post by StephenO Fri Jan 10, 2014 5:11 pm
GPC Assistance by shaun78 » Fri Dec 13, 2013 7:15 pm	8	3662	Last post by shaun78 Fri Jan 10, 2014 12:51 pm
preparative LC system bleeding by jiangds06 » Wed Jan 08, 2014 6:17 pm	1	1908	Last post by Gerhard Kratz Thu Jan 09, 2014 8:36 am
Encapsulated Bonding Technology ? by rick1112 » Thu Dec 26, 2013 3:43 am	3	3176	Last post by amckeown Tue Jan 07, 2014 10:57 am
Stuck on equilibration by Thorunn » Mon Dec 16, 2013 11:52 am	4	2993	Last post by Thorunn Tue Jan 07, 2014 9:47 am
temperature on gradient retention time by jiangds06 » Tue Jan 07, 2014 1:46 am	1	2079	Last post by tom jupille Tue Jan 07, 2014 6:12 am
Peak splitting after 200 inj. by Rdsxbaseball » Sat Jan 04, 2014 5:48 am	7	3250	Last post by Rdsxbaseball Tue Jan 07, 2014 2:54 am
Separation of 2-Chloro, 4-Fluorotoluene to its isomer by praveenpaliwal » Tue Dec 10, 2013 5:35 pm	11	4284	Last post by praveenpaliwal Mon Jan 06, 2014 4:55 pm
Peak Splitting on UPLC by mmehta » Fri Mar 23, 2012 12:40 pm	26	8652	Last post by Rdsxbaseball Sun Jan 05, 2014 1:25 am
Chemstation B.03.01 SR 1.1 Issue by sga » Sat Jan 04, 2014 10:57 pm	3	3762	Last post by sga Tue Jan 07, 2014 10:56 pm
Early eluting peaks splitting on Agilent LC by DrathsRob » Wed Oct 13, 2010 12:57 pm	7	4245	Last post by Rdsxbaseball Sat Jan 04, 2014 6:25 pm
Risk Based Method Validation by gtma » Tue Nov 12, 2013 6:46 pm	5	3114	Last post by gtma Sat Jan 04, 2014 3:14 pm
Acquity UPLC column compatibility with Agilent 1200 series by pkaloudis » Fri Jan 03, 2014 12:16 pm	4	5749	Last post by MSCHemist Fri Jan 03, 2014 7:08 pm
Gradient Program in HPLC by saipraveen7 » Fri Jan 03, 2014 4:19 pm	2	3467	Last post by tom jupille Fri Jan 03, 2014 5:47 pm
GABA and EACA hplc determination with using HILIC column by sadurr1 » Thu Jan 02, 2014 11:52 am	0	3161	Last post by sadurr1 Thu Jan 02, 2014 11:52 am
Agilent 1100 pump/degasser is making a strange sound by Frutasamir » Thu Dec 05, 2013 11:56 am	3	6397	Last post by richiekichi Fri Dec 27, 2013 5:07 am
Preswollen cellulose by dc78 » Wed Dec 25, 2013 7:13 pm	1	4660	Last post by Andy Alpert Thu Dec 26, 2013 4:00 pm
constant contaminant at m/z 118.123. Any advice / same prob? by Arne » Mon Dec 23, 2013 7:05 am	5	4631	Last post by Arne Tue Feb 25, 2014 8:28 pm
Sample doesnt stick to C18 column by tifaniin » Tue Nov 12, 2013 1:42 am	4	3539	Last post by Arne Mon Dec 23, 2013 7:15 am
LC method development book by ntruong » Sun Dec 22, 2013 4:15 pm	2	3180	Last post by ntruong Sun Dec 22, 2013 8:05 pm
Signal Noise calculation Chemstation by cinchocaine » Thu Dec 19, 2013 5:20 pm	1	8424	Last post by ntruong Sun Dec 22, 2013 4:13 pm
Can room temperature fluctuation cause retention time shift? by bunnahabhain » Tue Dec 17, 2013 4:00 pm	4	4949	Last post by lmh Thu Dec 19, 2013 10:39 pm
UV and MS 0.2 min out of sync - Thermo PAL - Accela - Q Exac by Arne » Wed Dec 11, 2013 4:32 pm	7	3679	Last post by Arne Mon Dec 23, 2013 7:10 am
indirect UV for sulphate ions by aceto_81 » Wed Dec 11, 2013 2:23 pm	9	4129	Last post by Markus Laeubli, Metrohm Wed Dec 18, 2013 10:30 am
EZ Chrom signal to noise by carbontritium » Tue Dec 17, 2013 11:03 am	1	2714	Last post by HPLCaddict Tue Dec 17, 2013 1:54 pm

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