Go Back   Science Forums Biology Forum Molecular Biology Forum Physics Chemistry Forum > Molecular Research Topics Forum > Proteomics Forum > Mass Spectrometry Forum
Register Search Today's Posts Mark Forums Read

Mass Spectrometry Forum Discuss and post questions about LC-MS, Q-STAR, MALDI-TOF, and other Mass Spectrometry Questions in the Mass Spec Forum.


Qstar Pulsar Detection consistency problems!!!

Qstar Pulsar Detection consistency problems!!! - Mass Spectrometry Forum

Qstar Pulsar Detection consistency problems!!! - Discuss and post questions about LC-MS, Q-STAR, MALDI-TOF, and other Mass Spectrometry Questions in the Mass Spec Forum.


Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 08-27-2007, 02:44 PM
admin's Avatar
Administrator
 
Join Date: Nov 2005
Posts: 1,418
Thanks: 883
Thanked 68 Times in 58 Posts
Default Qstar Pulsar Detection consistency problems!!!



Hi all
I am a new mass spec user. I use a Dionex LC and API qstar pulsar i MS. Of late i Have been having issues with the detection of ions. we use the microion spray head II (nanospray)

It works fine to start with. Then within 15 minutes the TIC drops down right down to ground. We have ruled out spraying issues. the spray head sprays well. we can see it well on the screen.

we are at loss to explain what is wrong. Because the machine works just fine for one sample but for the next sample it runs for a few mintues and drops down gradually. it is this inconsistency which drives us crazy. We are not able to run batches/sequences because of it.

can any one help?

Cheers
(posted by QStar USER) please re-register
Reply With Quote
  #2  
Old 04-04-2012, 04:13 AM
Pipette Filler
Points: 6, Level: 1 Points: 6, Level: 1 Points: 6, Level: 1
Activity: 0% Activity: 0% Activity: 0%
 
Join Date: Apr 2012
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Default Re: Qstar Pulsar Detection consistency problems!!!

Please let me know if you manage to fix this problem
Thanks Sam
Reply With Quote
Reply

Tags
consistency , detection , problems , pulsar , qstar


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
problems with growing healthy Arabidopsis plants Monika Kuzma Arabidopsis and Plant Biology 1 02-19-2007 03:55 PM
Problems with growing healthy Arabidopsis plants - light intesity? Karl Lundy Arabidopsis and Plant Biology 0 02-07-2007 05:11 PM
Einstein's Gravitational Waves May Set Speed Limit For Pulsar Spin Do Wah Ditty Physics Forum 0 07-08-2003 11:55 AM


All times are GMT. The time now is 01:46 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2005 - 2012 Molecular Station | All Rights Reserved
Page generated in 0.11737 seconds with 16 queries