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	72925	Last post by tom jupille Thu Mar 11, 2021 6:40 pm

Topics	Replies	Views	Last post
Amino acid analysis with LCMS by bpatro » Wed Jun 18, 2014 8:12 pm	2	3179	Last post by lmh Tue Jun 24, 2014 9:07 am
DSQII Diagnostics problems by ysalka » Mon Jun 23, 2014 7:45 pm	0	2847	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	2801	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	3267	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	3652	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	2534	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	2614	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	3018	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	2523	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	2911	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	2462	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	2666	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	3024	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	4865	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	13105	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	3072	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	3389	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	6112	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	4003	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	3002	Last post by fvillar2 Wed Jun 04, 2014 4:20 pm
Agilent 1956B Firmware by asm » Wed May 28, 2014 9:44 am	1	2632	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	3083	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	7089	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	3650	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	3147	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	3490	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	7605	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	6152	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	3315	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	3485	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	3706	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	2712	Last post by gcmasse413 Tue May 20, 2014 9:36 am
floating electric signal by jgort » Thu May 15, 2014 7:31 pm	3	2613	Last post by cat4lyst Tue May 20, 2014 4:43 am
Help in DSQII by ysalka » Sun May 18, 2014 7:46 pm	0	2823	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	3209	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	3219	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	3415	Last post by 01310040231 Wed May 14, 2014 9:50 pm
Varian 220MS problem by MJD » Mon Apr 14, 2014 4:50 pm	1	2954	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	3605	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	2760	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	6909	Last post by Pepter Thu May 08, 2014 9:30 pm
Agilent 1946D tuning error by ccahalane » Thu May 08, 2014 4:02 pm	0	3086	Last post by ccahalane Thu May 08, 2014 4:02 pm
Are there any MassLynx v4.0 still left out there?? by MHANLEY » Tue Apr 29, 2014 3:02 pm	2	2839	Last post by carras Wed May 07, 2014 12:47 pm
Dionex USB interface by trozen » Thu May 01, 2014 10:37 am	19	7685	Last post by trozen Thu Jun 12, 2014 8:14 am
Cone voltage on Quattro Ultima Pt by bunnahabhain » Mon Oct 28, 2013 3:46 pm	5	3182	Last post by bunnahabhain Mon May 05, 2014 11:03 am
analysis of boric acid by LC-MS by emanuele.scollo » Sat Oct 20, 2012 8:54 am	6	7419	Last post by JMB Fri May 02, 2014 5:47 pm
LC-MS/MS - Change of matrix - problems!!!! by smartin » Thu Apr 10, 2014 10:48 am	14	4832	Last post by emeulman Thu May 01, 2014 1:59 pm
Unprompted venting of MS roughing pumps by hlflemng » Fri Apr 25, 2014 3:59 pm	2	2915	Last post by Don_Hilton Thu May 01, 2014 11:37 am
HPLC-ESI-MS/MS Unwanted Peaks even with only cleaning MeOH by durdantoo » Thu Aug 01, 2013 5:23 pm	1	2658	Last post by carlo.annaratone Wed Apr 30, 2014 1:19 pm
calibration of mass spectrometer by catlover » Wed Apr 30, 2014 8:56 am	1	5120	Last post by carlo.annaratone Wed Apr 30, 2014 1:10 pm

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