Sponsor: |
MR Resources |
1-888-4 NMR HELP |
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Mission Critical Solutions for NMR Labs |
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Welcome to NUCLEI-SPIN. Designed to highlight the role of spectroscopy in the chemical sciences community.
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SPOTLIGHT |
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Understanding how a Mass Spectroscopy works can create a deeper appreciation for this powerful tool. |
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In mass spectrometry, a substance is bombarded with an electron beam having sufficient energy to fragment the molecule.
The positive fragments which are produced (cations and radical cations) are accelerated in a vacuum through a magnetic
field and are sorted on the basis of mass-to-charge ratio. Since the bulk of the ions produced in the mass spectrometer
carry a unit positive charge, the value m/e is equivalent to the molecular weight of the fragment. The analysis of
mass spectroscopy information involves the re-assembling of fragments, working backwards to generate the original molecule.
A very low concentration of sample molecules is allowed to leak into the ionization chamber (which is under a very high vacuum) where
they are bombarded by a high-energy electron beam. The molecules fragment and the positive ions produced are accelerated through a
charged array into an analyzing tube. The path of the charged molecules is bent by an applied magnetic field. Ions having low mass (low momentum)
will be deflected most by this field and will collide with the walls of the analyzer. Likewise, high momentum ions will not be deflected enough
and will also collide with the analyzer wall. Ions having the proper mass-to-charge ratio, however, will follow the path of the analyzer, exit
through the slit and collide with the Collector. This generates an electric current, which is then amplified and detected. By varying the strength
of the magnetic field, the mass-to-charge ratio which is analyzed can be continuously varied.
The output of the mass spectrometer shows a plot of relative intensity vs the mass-to-charge ratio (m/e). The most intense peak in the spectrum is
termed the base peak and all others are reported relative to it's intensity. The peaks themselves are typically very sharp, and are often simply
represented as vertical lines.
Courtesy of Dr. Paul Young, Organic Chemistry On-Line
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Serving the NMR Community - Mission Critical Solutions for NMR Labs |
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Not everyone knows how a high-field, superconducting nuclear magnetic resonance (NMR)
spectrometer works, but MR Resources enginerring staff do. These highly sophisticated
non-destrutive spectroscopy systems, are helping all branches of the chemical sciences
understand what molecules look like, what they're made of, and how their components are arranged.
learn more
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Spectrometers : Magnets : PM Agreements : Field & In-House Services : Cryogenic Fill : Training Programs
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ACTurbo™ Windows 2000 Based Data Acquisition Upgrade for Bruker AC & AM Spectrometers |
The ACTurbo™ is a multiple Digital Signal Processor (DSP), Windows 2000 / XP-based Data Acquisition Upgrade for Bruker NMR spectrometers
equipped with Aspect 3000 computers. The ACTurbo Real-Time NMR System is designed to replace the Aspect 3000 computer including the associated
computer peripherals, digitizer, pulse programmer, offset oscillators and Fourier filters. All the existing functions including the use of the
SCM (System Controlled Microprocessor) are retained.
The ACTurbo offers an easy way to convert an NMR spectrometer with an obsolete data acquisition system into a modern instrument.
At a fraction of the cost, this solution is an elegant alternative to total replacement of the spectrometer. Regular software upgrades
are available from MR Resources at no extra cost, also making the ACTurbo option very attractive insuring that the upgraded instrument
will truly remain state-of-the-art.
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Contact Paul Flint at 800-443-5486 ext: 330 or [EMAIL PROTECTED] for details.
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THE COMMUNITY |
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UPCOMING CONFERENCES |
BioITWorld Conference & Expo
Comprehensive life sciences event focused exclusively on the integration and utilization of information technologies
throughout all of the life sciences discovery and development processes.
When: November 12-14, 2002 Where: San Diego Convention Center, San Diego, CA, USA
2002 Eastern Analytical Symposium
EAS is the second largest conference and exposition in the United States for analytical chemists and those in the allied sciences.
When: November 18-21, 2002 Where: Somerset, NJ, USA
Quantitative Synthetic Polymer Mass Spectrometry
This workshop will bring together researchers and practitioners from industry, academia, and government to present new results, discuss recent trends, and identify important problems in the area of quantitative mass spectrometry of synthetic polymers.
When: November 7-8, 2002 Where: Gaithersburg, MD, USA
NMREC-3: Nuclear Magnetic Resonance 3rd Electronic Conference
NMR EC-3 is a fully international event open to all members of the scientific community and covers topics related to the disciplines of Nuclear Magnetic Resonance Spectroscopy and Magnetic Resonance Imaging.
When: November 8, 2002 Where: online
2002 ASMS Fall Workshop
This workshop is designed to be a highly interactive tutorial for anyone that wants to learn about the basics of Comparative and Functional Proteomics, as well as Proteomic Bioinformatics. The emphasis will be on practical details of how to actually carry out experiments, and interpret data.
When: November 7-8, 2002 Where: Sheraton Hotel, Boston, MA, USA
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| Suggest A Conference for Next Issue of NUCLEI-SPIN
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PROMOTIONS |
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Cryogenic Fill Community Bulletin |
Efficient operation of your NMR facility begins with a knowledgeable and responsible supplier
of liquid helium and liquid nitrogen. MR Resources starts where the others leave off. We have created
a cryogen distribution system specifically for Magnetic Resonance Facilities. MR Resources is the
largest independent supplier of NMR cryogens. We have a proven track record of expert cryogen service
across the United States.
How many times have you attempted to fill your magnet with Liquid Helium and found yourself unsure
if you were doing it correctly?
- Is my magnet's current Liquid Helium level at a point where the coil is partially exposed?
- What do I do differently if it is?
- Am I filling it too fast…or too slow?
- Is the pressure in the dewar where it's supposed to be for my particular type of magnet?
- What do I do if the fill line goes "soft" while I'm doing a fill?
You may not know all the answers to these important questions, but this much is true, if the magnet
is not filled in the proper manner it will quench causing
significant "down time" for your lab, not to mention the exorbitant costs associated
with bringing the magnet back up to field.
What would it be worth to your lab to not have to worry about such issues?
MR Resources can take over the responsibility of properly filling your NMR Magnet so you don't have to.
You are trained to do analysis & experiments utilizing your spectrometer. We are trained to take
care of ALL aspects regarding your NMR spectrometer. MR Resources' Helium Fill Contracts allow you to
do your work, while we do ours. Our engineers will look at your magnets
specifications and arrange the proper scheduling to come to your lab and fill your
magnets with Liquid Helium, thus both assuming responsibility for the proper filling
of your magnets and freeing up your time for your lab work.
If you prefer to do your own magnet fills, we can also SUPPLY your cryogens as well.
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Magmedix specializing in MRI facility product lines |
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A lot of care must go into outfitting an MRI suite. The scanners’ high magnetic fields
necessitate strictly non-magnetic products. You can simplify your product search by choosing
Magmedix as your single source provider.
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NMR Spectrometer Special of the Month! |
Bruker AMX400. Dedicated F19 channel with probe, complete multinuclear channel AG-109 to P-31 including broadband preamplifier, filters and probehead. Installed for $125,000.00 if PO is received by November 15th. (Subject to availability)(Within the Continental United States)
Contact Paul Flint at 800-443-5486 ext: 330 for details.
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NMRArchive™ NMR Data Management Software |
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NMRArchive™ ends the tedious and time-consuming manual organization and handling of
stored NMR datasets by providing an elegant solution for automatic archiving and management of NMR data.
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NMR Spectrometer Sales and Leasing |
MR Resources now offers leasing. Leasing provides a total solution alternative when financing
a complete NMR Spectrometer and ensures that our customers will always have the
most current technology, at affordable low monthly payments.
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Leasing offers customers low monthly payments.
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Improves and simplifies financial planning.
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Leasing provides a total solutions financing for the entire acquisition.
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Bundles costs for software, services, and support for all spectrometers.
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Convenient one stop for all your NMR needs.
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Sell your surplus NMR Spectrometer |
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Before discarding your surplus NMR Spectrometer, consoles or magnets, call MR Resources. We'll pay
top dollar for your current NMR Spectrometer and components (all major brands), and we'll handle
deinstallation, removal, crating and shipping.
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Benefits of NMR Service Agreements |
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For nearly twenty years, MR Resource's engineers have refined a comprehensive package of
service agreements that ensure compliance, safety and the longevity of your
NMR systems with in the lab environment.
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NMR Field Services |
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You are a telephone call away from an experienced staff that can get your system running and
keep it running reliably, day after day, minimizing your down time and maximizing your productivity.
We stock an in-depth supply of repair parts and offer a complete line of non-magnetic tools and accessories.
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NMR Magnet Sales |
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MR Resources offers a full line of refurbished superconducting magnets and room
temperature shim and shim power supplies. We specialize in Oxford, Spectrospin, and Magnex magnets, ranging
in field strengths from 100 Mhz to 600 Mhz. Our refurbished magnets offer an economically
attractive alternative to new systems. We offer complete installation, service, and repair
parts on all magnets.
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NMR In-House Services |
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Our NMR hardware engineers can offer you the benefit of over 20 years of NMR service experience.
Regardless of the age or condition of your NMR spectrometer, we will service NMR spectrometers
that OEM manufacturers will no longer service or repair.
Our in-house service facility is outfitted with all the necessary equipment used to ensure
speedy and reliable repair of your NMR spectrometer.
We also carry most boards and modules in stock for immediate swap-out
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NMR Accessories and Parts |
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MR Resources carries a wide variety of NMR accessories to keep your NMR spectrometer working efficiently,
decreasing down time which can effect your NMR lab research.
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Enhanced Support for MSL Systems |
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MR Resources, in collaboration with Doug Burum, is pleased to announce enhanced support for MSL systems.
MR has acquired an extensive inventory of MSL parts and sub-assemblies, and Doug, as the former Bruker national
product manager for solid state NMR, posseses extensive hands-on MSL experience. The result is a powerful and
unique combination of parts and expertise that can keep your MSL in top condition, and train you and your
technicians in all routine and expert solids and liquids applications. Now is your chance to significantly
enhance the productivity of your MSL.
Contact MR Resources at 978-630-2509 or email [EMAIL PROTECTED] and ask for a free consultation.
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Sponsor: |
MR Resources |
1-888-4 NMR HELP |
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Mission Critical Solutions for NMR Labs |
© 2002 NUCLEI-SPIN Newsletter. |
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