Life Sciences Mass Spectrometry eNewsletter
Critical Mass Issue 31
Jan 2007
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 Tip of the Month: Positive and Negative Polarity Data Dependent Settings  
Separate positive and negative polarity data dependent settings allows separate parent, reject and neutral loss mass lists for positive and negative events respectively. In addition, it allows for separate MSn settings for positive and negative polarity events such as thresholds and activation energies.
See How 

 All Molecule World Tour: Feb 2 - May 10 2007  
Register to attend a free seminar on the latest LC/MS methods for:
- protein analysis
- compound identification
- bioanalysis
- environmental
- food safety
The tour will feature various industry leaders and application experts.
Learn More and Register Now 

 Proteomics: Targeted Quantitative Protein Analysis on A Triple Quad  
A common endpoint for a biomarker discovery experiment is a list of putative marker proteins. A reasonable next step is to then perform targeted quantitative measurements of these proteins in an expanded patient population to assess their validity as markers. Analytical accuracy and precision are required for unambiguous quantitative analysis of targeted proteins from very complex mixtures. Wide dynamic range and high sensitivity are critical for...
Download Full Article [PDF 819 kB] 

 Software Update  
Here are the software updates for January 2007. Please contact your local sales representative regarding questions on how to upgrade your software.
Note: This list is subject to change without notice as our software is continuously being updated and improved.
View Updates Now 

 LC/MS with TurboFlow® Technology  
Thermo Fisher Scientific recently acquired Cohesive Technologies, the manufacturer of advanced online sample extraction systems that employ patented TurboFlow technology, to provide customers with a complete end-to-end LC-MS/MS solution. The Aria TLX systems are first choice in bioanalytical labs because they nearly eliminate the time consuming sample prep process while significantly increasing productivity, sensitivity, and selectivity. Aria Systems with TurboFlow methods minimize ion suppression for sample extracts, which is a significant advantage compared to SPE and PPT. As a result, it is the preferred method for sample preparation of biological fluids.
Read a few applications to learn more 

 LC/MS Abstracts Database CD  
The LC/MS Abstracts Database CD, now available, includes:
- Over two thousand LC/MS abstracts
- 50+ PTM analysis abstracts
- 75+ biomarker-related abstracts
- 100+ MALDI application abstracts
- 200+ proteomics application abstracts
- Top-down, bottom-up, and high-throughput protein ID
- LTQ Orbitrap, LTQ FT, TSQ Quantum, and MSQ applications
Don't miss out on these many new applications.
Request your free copy now 

 Food Safety: Automated Sample Cleanup using Red Wine as a Matrix  
Achieving low limits of detection (LODs) of pesticides, antibiotics and veterinary residues in food residues and drinking water is of paramount importance in order to monitor the regulatory levels as stated by the US, Japanese and EU directives. These substances pose a significant health threat and therefore, need to be accurately detected at the lowest levels, typically at part per trillion (ppt).
Download Full Article [PDF 545 kB] 

 Trap Talk: Single Ion Monitoring with High Mass Accuracy  
Recent work in proteomics research demonstrates the need to identify peptides and proteins in complex mixtures from biological sources at extremely low levels with the highest confidence. This is facilitated by the use of a mass spectrometer with high dynamic range and high mass accuracy. Moreover, for MS/MS experiments, fast scan repetition rates at highest sensitivity are needed.
Download Full Article [PDF 325 kB] 

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