Gas Chromatography

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Welcome! by tom jupille » Thu Mar 11, 2021 6:30 pm	0	77927	Last post by tom jupille Thu Mar 11, 2021 6:30 pm

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septum purge flow blocked by faris » Fri Nov 25, 2011 5:48 am	2	1580	Last post by faris Fri Nov 25, 2011 3:48 pm
Liquid CO2 cooling of injector (1077) not working? by north90ty » Thu Nov 24, 2011 4:19 am	5	2027	Last post by Peter Apps Fri Nov 25, 2011 6:19 am
Connecting Varian 8100 autosampler to Varian 3800 by wrathmallpaul » Wed Nov 23, 2011 11:38 am	2	1933	Last post by wrathmallpaul Thu Nov 24, 2011 12:16 pm
Can we use N2 carrier gas for ethylene detection by ismawanto » Fri Nov 04, 2011 12:34 pm	20	3946	Last post by Johnny Rod Thu Nov 24, 2011 11:08 am
Column Advise Pls by cat4lyst » Wed Nov 16, 2011 8:46 pm	10	2424	Last post by Forse Thu Nov 24, 2011 10:04 am
GC-FID - CTC CombiPal Flush Gas Regulator by wan » Thu Nov 10, 2011 6:42 am	7	2934	Last post by north90ty Thu Nov 24, 2011 4:54 am
Method for quantitative determiantion of Dymethilformammide by alemaggot » Wed Nov 23, 2011 3:25 pm	3	1494	Last post by chromatographer1 Wed Nov 23, 2011 4:27 pm
Regeneration of cyclodextrin TFA column by democanarchis » Tue Nov 22, 2011 10:36 pm	1	1502	Last post by chromatographer1 Wed Nov 23, 2011 5:51 am
PE Autosystems XL sub ambient by GeorgeDCarr » Mon Nov 21, 2011 5:09 pm	2	1418	Last post by GeorgeDCarr Tue Nov 22, 2011 12:00 pm
GC calibration by Vaishali Kulkarni » Sat Nov 19, 2011 4:42 pm	1	1462	Last post by kostas Tue Nov 22, 2011 9:28 am
Connecting retention gap... by Tommy Krak » Thu Oct 27, 2011 5:37 pm	17	3524	Last post by Tommy Krak Mon Nov 21, 2011 11:00 pm
calibration of GC by Vaishali Kulkarni » Sat Nov 19, 2011 12:18 pm	1	1615	Last post by carlos.teixeira Sat Nov 19, 2011 2:09 pm
HP7673 Controller/turret Error - need help by 4footsnake » Thu Jun 23, 2011 3:49 pm	5	3461	Last post by Consumer Products Guy Sat Nov 19, 2011 1:32 am
SPME-GCMS by bryan12345 » Fri Nov 18, 2011 8:20 am	1	1917	Last post by Don_Hilton Fri Nov 18, 2011 11:59 am
Problem with Octanoic Acid peak. by dogmatta » Thu Nov 17, 2011 1:51 pm	6	2149	Last post by Peter Apps Fri Nov 18, 2011 8:22 am
Column comps in Empower by sdegrace » Fri Nov 18, 2011 2:11 am	0	1556	Last post by sdegrace Fri Nov 18, 2011 2:11 am
Helium to Hydrogen Method Transfer Problem by sdegrace » Mon Sep 26, 2011 2:51 pm	4	2160	Last post by sdegrace Fri Nov 18, 2011 2:07 am
ghost peaks in pulsed split mode by ljhainsw » Thu Nov 17, 2011 7:04 pm	0	1919	Last post by ljhainsw Thu Nov 17, 2011 7:04 pm
lactic acid vs acetic acid retention times by siddana2005 » Thu Nov 17, 2011 10:50 am	3	3024	Last post by chromatographer1 Thu Nov 17, 2011 6:30 pm
NPD vs NCD by MSCHemist » Tue Nov 15, 2011 3:06 pm	1	3552	Last post by AICMM Thu Nov 17, 2011 3:20 pm
Tailing Ethanol Peak at GC! by karyatid » Wed Nov 16, 2011 4:49 pm	5	6095	Last post by AICMM Wed Nov 16, 2011 7:55 pm
HS-sample preparation problem. by tinsang » Wed Nov 09, 2011 8:06 pm	4	2882	Last post by tinsang Tue Nov 15, 2011 7:15 pm
Bogus autoinjector wash procedure. by ZeroAir » Wed Nov 09, 2011 11:10 pm	3	3496	Last post by ZeroAir Tue Nov 15, 2011 6:20 pm
Insulator in 5972 contamination by faris » Tue Nov 15, 2011 4:38 pm	1	2605	Last post by Yama001 Tue Nov 15, 2011 6:16 pm
Help !!! Carboxen-1000 column + Porapak Column by salgham2 » Sat Nov 12, 2011 1:10 am	3	9887	Last post by chromatographer1 Tue Nov 15, 2011 4:01 pm
Temperature profile for alcohols by natalieshen85 » Fri Oct 21, 2011 11:18 pm	4	2856	Last post by Chenosuke Mon Nov 14, 2011 10:15 pm
Why not UPS with GC ? by thohry » Thu Oct 27, 2011 4:08 am	7	4428	Last post by Chenosuke Mon Nov 14, 2011 9:29 pm
Ethylene glycol in API by swarup_80 » Sun Nov 13, 2011 6:08 am	1	2745	Last post by Consumer Products Guy Mon Nov 14, 2011 2:56 pm
Varian 450-GC (TCD/FID) by BASHEER » Wed Oct 12, 2011 7:46 pm	3	2823	Last post by chromatographer1 Sat Nov 12, 2011 7:46 pm
Manual injection for Agilent 7890A by ismawanto » Mon Oct 24, 2011 12:56 am	8	6038	Last post by larkl Fri Nov 11, 2011 7:02 pm
Manual integrator Agilent 3396a by msafont » Thu Nov 10, 2011 3:35 pm	2	2136	Last post by msafont Thu Nov 10, 2011 8:20 pm
Negative Peak in IC analysis by hchauhr » Thu Nov 10, 2011 2:14 pm	4	7626	Last post by hchauhr Thu Nov 17, 2011 12:27 pm
CHF3 column by tigerk2001 » Wed Nov 09, 2011 2:56 pm	4	2389	Last post by chromatographer1 Thu Nov 10, 2011 1:17 am
USP Glycerin Related Compounds by thw214 » Tue Apr 12, 2011 4:58 pm	6	3570	Last post by bianca Wed Nov 09, 2011 3:38 pm
Piperonyl Butoxide Issue by SamC489 » Tue Nov 08, 2011 9:50 pm	0	2138	Last post by SamC489 Tue Nov 08, 2011 9:50 pm
Pressure is developing slowly in 5890 II plus by faris » Tue Nov 08, 2011 4:45 am	4	2285	Last post by faris Tue Nov 08, 2011 3:50 pm
Class 3 Residual solvents by vdnsrinivas » Fri Oct 21, 2011 5:29 pm	11	3506	Last post by chromatographer1 Tue Nov 08, 2011 2:50 am
TMS derivatives mass spectral data base for GC/MS? by Sajan » Sat Nov 05, 2011 7:31 am	3	3837	Last post by Consumer Products Guy Mon Nov 07, 2011 4:19 pm
5890 troubleshooting help (pressure-related) by chemwipe » Wed Dec 02, 2009 2:33 pm	14	10083	Last post by faris Mon Nov 07, 2011 5:34 am
Separation of ethyl bromide by push » Sun Nov 06, 2011 3:42 pm	0	1953	Last post by push Sun Nov 06, 2011 3:42 pm
Validation of thermal conductivity detector (TCD) by kchat79 » Fri Nov 04, 2011 1:22 pm	1	2354	Last post by chromatographer1 Fri Nov 04, 2011 7:35 pm
Plot Q column by eauchem » Wed Nov 02, 2011 9:16 pm	4	3190	Last post by nvalentine Thu Nov 03, 2011 3:12 pm
Problems making a calibration curve for CO2 by jsfoodbk » Tue Oct 25, 2011 12:31 am	11	4772	Last post by chromatographer1 Thu Nov 03, 2011 1:30 am
Residual solvents external standard injections by RhysB » Sun Oct 30, 2011 9:03 pm	1	1677	Last post by Johnny Rod Wed Nov 02, 2011 2:53 pm
New to GC, pls help by fshah24 » Wed Oct 26, 2011 8:11 pm	3	1730	Last post by fshah24 Tue Nov 01, 2011 11:15 pm
Poor reproducibility HS/GC-ECD by Stangatang » Fri Oct 28, 2011 3:21 am	5	1893	Last post by cbwhipp Tue Nov 01, 2011 5:12 pm
low HPLC assay results by gys25016 » Tue Nov 01, 2011 9:15 am	1	2089	Last post by max_planck Tue Nov 08, 2011 1:55 pm
Argon as carrier gas for measuring N2, N2O, CH4 and CO2 by Hiz » Wed Oct 26, 2011 12:25 am	2	2004	Last post by Hiz Tue Nov 01, 2011 12:25 am
Empower 2154 cannot start 7890A GC by clc » Mon Oct 31, 2011 10:45 pm	0	1434	Last post by clc Mon Oct 31, 2011 10:45 pm
upgrading computer for GC5890 series 2 by efshark79 » Thu Oct 27, 2011 6:36 pm	4	6394	Last post by alexsun Sun Oct 30, 2011 8:40 pm

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