Liquid Chromatography

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11911 topics

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Welcome! by tom jupille » Thu Mar 11, 2021 6:23 pm	0	76928	Last post by tom jupille Thu Mar 11, 2021 6:23 pm

Topics	Replies	Views	Last post
force degradation by ydna6969 » Tue Mar 10, 2015 7:45 am	1	2523	Last post by HPLCaddict Tue Mar 10, 2015 4:06 pm
Sample Peaks in Blank at a Specific Seq Interval (Bizarre) by shemesh199 » Tue Mar 10, 2015 3:30 pm	0	2830	Last post by shemesh199 Tue Mar 10, 2015 3:30 pm
flow meter by tarzan » Fri Apr 11, 2014 6:11 am	5	4810	Last post by BryanToth Tue Mar 10, 2015 11:20 am
Baseline noise by supersayan70 » Sun Mar 08, 2015 1:37 pm	2	3094	Last post by danko Mon Mar 09, 2015 8:34 am
Varian 800 MIB Help! by jguz21 » Mon Mar 09, 2015 4:17 am	0	2789	Last post by jguz21 Mon Mar 09, 2015 4:17 am
Pyridoxine hcl by ydna6969 » Thu Mar 05, 2015 10:30 am	1	2517	Last post by HPLCaddict Thu Mar 05, 2015 11:28 am
Lubricating syringe drive by Sallybeetle » Mon Mar 02, 2015 6:31 pm	2	2494	Last post by Sallybeetle Thu Mar 05, 2015 3:14 am
Impurity Percent Recovery (API instead of known) by jayroseville58 » Tue Dec 30, 2014 12:41 pm	1	3035	Last post by gtma Wed Mar 04, 2015 9:39 pm
percent impurity calculation (HPLC) by jayroseville58 » Tue Jul 08, 2014 11:49 am	9	12135	Last post by gtma Wed Mar 04, 2015 9:26 pm
Waters 481 Operator's Manual in Paper or .pdf Form by scottbr72 » Mon Nov 25, 2013 7:07 am	1	3129	Last post by heather-tech Wed Mar 04, 2015 10:07 am
Agilent HPLC 1100 - Pressure fluctuation, bad injections by jlz1315 » Mon Mar 02, 2015 7:21 pm	11	6571	Last post by KM-USA Tue Mar 03, 2015 10:35 pm
UPLC Retention time / Pressure Fluctuations.. help by mnrevoy » Wed Feb 18, 2015 2:41 pm	9	6783	Last post by mnrevoy Mon Mar 02, 2015 9:20 pm
Increasing Column Length by walker8476 » Mon Feb 23, 2015 5:33 am	10	11723	Last post by Sallybeetle Mon Mar 02, 2015 6:22 pm
USP methods: chromatograms by Marija Mac » Thu Feb 26, 2015 2:18 pm	9	5746	Last post by danko Mon Mar 02, 2015 2:53 pm
Equippment prices in your area by Leni » Fri Feb 20, 2015 10:24 am	5	3657	Last post by Leni Fri Feb 27, 2015 6:21 am
Interpretation of Ph Eur rounding rule by Terry » Mon Feb 02, 2015 6:58 am	2	6315	Last post by Terry Fri Feb 27, 2015 1:08 am
Agilent 1260 by Besma2 » Mon Feb 23, 2015 10:22 am	3	3597	Last post by Besma2 Thu Feb 26, 2015 3:21 pm
PEEK Tubing Issues by MarcWJHetu » Fri Feb 20, 2015 2:49 pm	5	5542	Last post by Markus Laeubli, Metrohm Thu Feb 26, 2015 2:43 pm
Increasing Column Length by walker8476 » Tue Feb 24, 2015 10:08 pm	0	2903	Last post by walker8476 Tue Feb 24, 2015 10:08 pm
How does changing flow affect gradient separation? by Mike H. » Tue Feb 24, 2015 3:51 pm	2	3081	Last post by Mike H. Tue Feb 24, 2015 7:01 pm
extra-column volume and extra column dispersion by S_Zee » Tue Feb 24, 2015 6:30 am	3	4552	Last post by M Farooq Tue Feb 24, 2015 5:07 pm
GPC universal calibration and accuracy woes by chemEZ » Fri Feb 20, 2015 7:21 pm	3	3525	Last post by Gerhard Kratz Tue Feb 24, 2015 2:34 pm
Rational behind the WL selection by vijayak » Mon Feb 23, 2015 7:17 am	2	3038	Last post by danko Tue Feb 24, 2015 8:34 am
Switching Columns by MarcWJHetu » Mon Feb 09, 2015 4:21 pm	10	5143	Last post by DJ Mon Feb 23, 2015 9:09 pm
PRP x100 column indirect uv detection for commona anions by alperbayrakdar » Wed Dec 24, 2014 8:17 am	10	6407	Last post by DJ Mon Feb 23, 2015 8:20 pm
Looking for opinions on HP 1050 HPLC by dlntx9 » Mon Feb 23, 2015 4:33 pm	4	3213	Last post by KM-USA Mon Feb 23, 2015 7:42 pm
rapidly climbing back pressure with new column by c13hart » Fri Feb 20, 2015 7:23 pm	6	4036	Last post by danko Mon Feb 23, 2015 1:54 pm
GPC - Negative Peaks by chiralcenter1552 » Tue Jan 06, 2015 9:07 pm	5	9073	Last post by darthcolvin Sun Feb 22, 2015 7:25 pm
Dansyl Estradiol by kjones0000 » Fri Feb 20, 2015 9:19 pm	0	3391	Last post by kjones0000 Fri Feb 20, 2015 9:19 pm
finnigan surveyor degasser having noise by xiaoyu_fish » Thu Feb 19, 2015 4:39 pm	3	3168	Last post by tom jupille Fri Feb 20, 2015 12:56 am
Impurity reporting by HPLC by shadow » Wed Feb 11, 2015 6:17 pm	10	4173	Last post by shadow Thu Feb 19, 2015 6:47 pm
peak sensitivity in RID HPLC methode by MP modifier by canhasan » Thu Feb 19, 2015 1:52 pm	1	2758	Last post by tom jupille Thu Feb 19, 2015 3:55 pm
FRC-10A fraction volume problem by Jeffetw » Thu Feb 19, 2015 3:55 pm	0	2750	Last post by Jeffetw Thu Feb 19, 2015 3:55 pm
Xanthan gum vs heparin by canhasan » Thu Feb 19, 2015 1:47 pm	1	2395	Last post by Gerhard Kratz Thu Feb 19, 2015 2:26 pm
does permanent flow in the LC protect the pump seals? by RALS » Thu Jun 12, 2014 3:55 pm	5	2830	Last post by lmh Thu Feb 19, 2015 2:08 pm
Impurity Specs for Drug Product by jayroseville58 » Tue Sep 30, 2014 4:36 am	1	2714	Last post by gtma Thu Feb 19, 2015 2:47 am
solution stability and method validation by ydna6969 » Mon Jan 19, 2015 12:03 pm	8	4351	Last post by gtma Thu Feb 19, 2015 2:21 am
HPLC validation - accuracy determination issue by Robotjock » Tue Jan 27, 2015 12:30 pm	2	2699	Last post by gtma Thu Feb 19, 2015 1:58 am
Reporting Impurity values by kspansheria » Mon Jun 20, 2011 2:15 pm	10	10189	Last post by gtma Wed Feb 18, 2015 10:29 pm
TLC by walker8476 » Tue Feb 17, 2015 1:09 am	8	5687	Last post by JMB Wed Feb 18, 2015 10:18 pm
Waters UPLC for sale by MI2015 » Wed Feb 18, 2015 12:01 am	0	3258	Last post by MI2015 Wed Feb 18, 2015 12:01 am
Inconsistent rentention time HELP. URGENT~!!! by paulinephoon » Tue Feb 17, 2015 12:06 pm	17	13571	Last post by JMB Tue Mar 31, 2015 9:43 pm
Efficiency of an Unretained Peak by M_Farooq » Sun Dec 21, 2014 7:45 pm	17	10112	Last post by danko Mon Feb 16, 2015 6:27 am
Principle involved in Reverse phase chromatography by saipraveen7 » Sat Feb 14, 2015 2:41 pm	2	8292	Last post by lmh Thu Feb 19, 2015 2:21 pm
Accuracy Test for Extended Release Tablet (Dissolution) by jayroseville58 » Thu Jan 22, 2015 2:05 pm	1	2888	Last post by danko Fri Feb 13, 2015 11:37 am
Looking for suggestions on 900 g scale chromatography by DeniseHeinz » Thu Feb 12, 2015 4:27 pm	0	2917	Last post by DeniseHeinz Thu Feb 12, 2015 4:27 pm
VIT C problem by ydna6969 » Wed Feb 11, 2015 2:00 pm	2	2592	Last post by Andy Alpert Wed Feb 11, 2015 2:55 pm
pressure loss and retention loss by jiangds06 » Wed Jan 21, 2015 6:04 pm	6	3642	Last post by jiangds06 Wed Feb 11, 2015 1:49 pm
acetone as mobile phase by IUpuppy » Thu Feb 05, 2015 9:25 pm	6	5796	Last post by rwang Wed Feb 11, 2015 1:28 am
Higher Peak Area by Miniteh » Sun Jan 04, 2015 5:17 pm	14	6463	Last post by mattmullaney Tue Feb 10, 2015 10:18 am

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