LC-MS, GC-MS, and other - Page 40 - Chromatography Forum

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Welcome! by tom jupille » Thu Mar 11, 2021 6:40 pm	0	120953	Last post by tom jupille Thu Mar 11, 2021 6:40 pm

Topics	Replies	Views	Last post
Varian 500-MS vacuum problems by rp18 » Thu Jul 03, 2014 12:14 pm	0	3383	Last post by rp18 Thu Jul 03, 2014 12:14 pm
How to analyze silicone oil PDMS 200 viscosity of 5cSt by salavn » Thu Jul 03, 2014 4:42 am	0	3783	Last post by salavn Thu Jul 03, 2014 4:42 am
New column, worse resolution? by MichaelVW » Tue Jun 10, 2014 11:50 pm	4	4333	Last post by Bigbear Mon Jun 30, 2014 5:03 pm
Tekmar LSC 2000 Purge and Trap to 6890-5975. by MSCHemist » Mon Jun 09, 2014 8:52 pm	26	9903	Last post by James_Ball Fri Jun 27, 2014 8:53 pm
Peak area units in MassLynx 4.1 / Quattro Ultima Pt by bunnahabhain » Wed Jun 25, 2014 3:16 pm	3	3714	Last post by mhr311 Fri Jun 27, 2014 7:24 pm
Recognition with Waters 3100 detector/MassLynx [LC-MS] by Lavoisier » Wed Jun 18, 2014 8:42 pm	1	3055	Last post by mhr311 Thu Jun 26, 2014 5:46 pm
ITQ 700 - CI mode by klam » Thu Jun 26, 2014 4:54 am	1	2343	Last post by leadazide Thu Jun 26, 2014 6:56 am
flushing the LCMSMS system in the end of the day by RALS » Fri Jun 20, 2014 3:19 pm	4	3060	Last post by RALS Wed Jun 25, 2014 8:54 am
Micromass platform LC.. anyone ever set one up? by Phillhere » Mon Jun 23, 2014 8:39 pm	11	5300	Last post by mhr311 Fri Jul 18, 2014 3:55 pm
Amino acid analysis with LCMS by bpatro » Wed Jun 18, 2014 8:12 pm	2	3441	Last post by lmh Tue Jun 24, 2014 9:07 am
DSQII Diagnostics problems by ysalka » Mon Jun 23, 2014 7:45 pm	0	2933	Last post by ysalka Mon Jun 23, 2014 7:45 pm
Help me, Varian Saturn 2200 problem. by tranngocdinh » Mon Jun 23, 2014 5:54 am	0	2911	Last post by tranngocdinh Mon Jun 23, 2014 5:54 am
etg (ethyl glucuronide) residual left in column/how to flush by PeterPopoff » Fri Jun 20, 2014 10:36 pm	0	3402	Last post by PeterPopoff Fri Jun 20, 2014 10:36 pm
not pumping down - Agilent GC 6890N MS 5973 system by FBProc » Fri Jun 20, 2014 3:58 am	2	3789	Last post by James_Ball Fri Jun 20, 2014 8:51 pm
10 fold peak hight in negative ion mode by milo83 » Tue Jun 17, 2014 4:22 pm	1	2669	Last post by Pepter Wed Jun 18, 2014 4:32 am
Determination MU RESINS with HPLC-MS by jabolko » Tue Jun 17, 2014 4:48 pm	0	2734	Last post by jabolko Tue Jun 17, 2014 4:48 pm
Tuning APCI Agilent 6420 by milo83 » Tue Jun 17, 2014 7:14 am	0	3137	Last post by milo83 Tue Jun 17, 2014 7:14 am
System Differences and Comparisons by fvillar2 » Wed Jun 11, 2014 6:39 pm	1	2644	Last post by fvillar2 Mon Jun 16, 2014 8:27 pm
The MS, VARIAN, Saturn 2200 is not full speed by tranngocdinh » Mon Nov 11, 2013 4:26 am	3	3049	Last post by dblux_ Mon Jun 16, 2014 5:45 am
Sensitivity using TSQ Qantum Max ESI by paddy1969 » Fri Jun 13, 2014 12:02 am	1	2551	Last post by bisnettrj2 Fri Jun 13, 2014 9:16 pm
EM voltage goes to 0 HP5890 Series II/59709B MS by jryter » Wed Jun 11, 2014 5:38 pm	3	2780	Last post by James_Ball Fri Jun 13, 2014 6:28 pm
heating the source a pumpind down by jmaduro » Sat Jun 07, 2014 9:43 pm	5	3123	Last post by James_Ball Wed Jun 11, 2014 5:57 pm
Cleaning Electron Multiplier? by James_Ball » Wed Jun 04, 2014 1:57 pm	3	5030	Last post by James_Ball Wed Jun 11, 2014 5:31 pm
tertiary amines by GC-MS by Peter Apps » Thu Jun 05, 2014 3:41 pm	4	13372	Last post by Peter Apps Mon Jun 09, 2014 9:36 pm
HBSS buffer for API 4000 QTRAP mass spec by parekhamit30 » Mon Jun 09, 2014 1:26 am	0	3210	Last post by parekhamit30 Mon Jun 09, 2014 1:26 am
leco Pegasus III detection limit? by walshbig » Sun Jun 01, 2014 12:20 pm	6	3482	Last post by Don_Hilton Sun Jun 08, 2014 2:52 am
Issue with VOC analysis using Agilent Atomx P&T system by tangaloomaflyer » Thu May 29, 2014 12:26 pm	12	6221	Last post by whalozan Fri Jun 06, 2014 6:30 pm
septum retainer nut for 6890 GC by smithdm » Wed Jun 04, 2014 2:30 pm	5	4138	Last post by 01310040231 Fri Jun 06, 2014 3:01 pm
New to LC-MS by fvillar2 » Wed Jun 04, 2014 4:20 pm	0	3095	Last post by fvillar2 Wed Jun 04, 2014 4:20 pm
Agilent 1956B Firmware by asm » Wed May 28, 2014 9:44 am	1	2730	Last post by asm Mon Jun 02, 2014 9:18 am
Hydrogen Purity for GC-MS by Oatsandbeans » Mon May 19, 2014 7:25 pm	2	3172	Last post by James_Ball Sat May 31, 2014 5:40 pm
MS tune theory question by jsupica » Sun May 11, 2014 12:42 pm	7	7346	Last post by James_Ball Sat May 31, 2014 5:33 pm
HP 5890 / 5970 GC-MS Interface Card Issues by nano2014 » Tue May 27, 2014 2:28 pm	1	3769	Last post by James_Ball Sat May 31, 2014 5:29 pm
Replicates of calibration curve lowest standard by Star Stella » Tue May 27, 2014 7:06 am	3	3260	Last post by James_Ball Sat May 31, 2014 5:17 pm
5975 w. turbopump by 01310040231 » Sat May 24, 2014 12:29 am	6	3570	Last post by 01310040231 Thu May 29, 2014 10:45 pm
Quantification of Lactose in Milk by HPLC-MS/MS? by carol » Fri Apr 04, 2014 9:14 am	12	7797	Last post by BZK Tue May 27, 2014 12:27 pm
HELP: system warns that baseline is too low by gcmasse413 » Tue May 20, 2014 9:45 am	1	7044	Last post by christophe_j Thu May 22, 2014 4:09 pm
Guide 34 Standards by christophe_j » Thu May 22, 2014 3:35 pm	0	3426	Last post by christophe_j Thu May 22, 2014 3:35 pm
two compounds w/ same Rt..and optimization general advice? by PeterPopoff » Thu May 22, 2014 2:56 am	2	3593	Last post by PeterPopoff Thu May 22, 2014 1:03 pm
problem about GC/MS: baseline too low by gcmasse413 » Tue May 20, 2014 10:32 am	5	3832	Last post by gcmasse413 Tue May 20, 2014 12:47 pm
HELP: problem with GC-MS/MS, baseline too low by gcmasse413 » Tue May 20, 2014 9:36 am	0	2806	Last post by gcmasse413 Tue May 20, 2014 9:36 am
floating electric signal by jgort » Thu May 15, 2014 7:31 pm	3	2705	Last post by cat4lyst Tue May 20, 2014 4:43 am
Help in DSQII by ysalka » Sun May 18, 2014 7:46 pm	0	2929	Last post by ysalka Sun May 18, 2014 7:46 pm
ThermoFIsher - Power outage and GC MS ITQ 700 by klam » Thu May 15, 2014 10:40 am	3	3326	Last post by leadazide Thu May 15, 2014 7:21 pm
gerstal mps/maestro config and chem station software by lsummer » Tue May 13, 2014 7:47 pm	3	3375	Last post by mickey00 Wed May 14, 2014 10:57 pm
Problem with Archon type autosampler by 01310040231 » Fri May 02, 2014 3:41 pm	4	3550	Last post by 01310040231 Wed May 14, 2014 9:50 pm
Varian 220MS problem by MJD » Mon Apr 14, 2014 4:50 pm	1	3053	Last post by shiva_kant Tue May 13, 2014 5:50 pm
Wrong mobile phase used for a column!! by tony26 » Mon May 12, 2014 2:52 pm	3	3784	Last post by James_Ball Tue May 13, 2014 4:09 pm
Why do Int Stnds not need reference ions In MRM LCMS? by PeterPopoff » Mon May 12, 2014 4:54 pm	2	2858	Last post by James_Ball Tue May 13, 2014 4:04 pm
How do YOU tune/calibrate new compounds on your LC-MS/MS? by richiekichi » Wed May 07, 2014 6:51 am	4	7168	Last post by Pepter Thu May 08, 2014 9:30 pm

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