What's New from 9/1/95 through 12/31/95
Search System of SIS
A new Search System has been installed into our Internet pages to enable
you to easily find parts, products or resource materials on out pages.
Our Internet pages have increased to more than 700 pages to date and will
expand to 3 or 4 times that amount within the next year. We hope that this
search system will prove useful to locate the needed resources. In addition
to the Search function we have also added an E-Mail Write us Button on
the bottom of each page. We hope that you will write us to give us your
feedback, to request additional information or to request price quotes.
New Application Notes
The Following new Application notes are now on line. These articles were
presented at the November 1995 Eastern Analytical Symposium.
Application Note 35 -
Volatile Organic Composition of Cranberries
Application Note 36 -
Identification of Volatile Compounds in New Automobile
Application Note 37 -
Volatile Organic Emissions from Automobile Tires
Symposium Poster Awards
Once again this year competition and awards were presented at the Eastern
Analytical Symposium for the best poster presentations in Mass Spectrometry
and Gas Chromatography.
The Mass Spectrometry award was sponsored by Scientific Instrument Services
and was awarded to Sandy Overton and John Manura of SIS for their presentation
on the quality of air inside new automobiles. For this presentation a study
was conducted to determine the volatiles present in the air inside new
cars. The major volatiles consisted of the siloxanes as well as BHT to
name a few. This application note is now on the Internet. Application
The Gas Chromatography award was sponsored by J&W Scientific and
was awarded to John Manura of Scientific Instrument Services for his presentation
on the selection and use of adsorbent resins. This work describes the results
of the determination of the breakthrough volumes of more than 200 analytes
on 7 different adsorbent resins. The details of this work are presented
in the section entitled "Adsorbent Resins."
Now Completed on the Internet
As part of our efforts to add our entire product line to our Internet pages,
we have just completed the two sections on our Mass
Spec Filament Repairs
and on our Mass
Spec Filament Manufacturing
. Accompanying these two sections are articles
describing the Facilities at SIS
for the Repair and Manufacture of Mass Spec Filaments
, our Machine
, our Welding
and Brazing Facilities
and OEM Manufacturing
. We will continue to add sections to these pages and hope to
have the entire Mass Spec Section of our catalog completed by the first
of the year.
The section of our home pages relating to the SIS Short Path Thermal Desorption
System is now complete. The Short Path Thermal Desorption System mounts
directly on top of the GC injection port to permit the direct thermal extraction
of volatiles from solid matrix samples or adsorbent resins into the GC
injection port for subsequent analysis via the GC or GC/MS. Due to its
'Short Path' of sample flow, this system overcomes the shortcomings of
other systems by eliminating long transfer lines and providing for optimum
delivery of samples to the GC via the shorted path possible. The technique
is highly sensitive and can eliminate the need for solvents in your sample
Included in this section is a complete description of the Short Path
Thermal Desorption System and accessories, Installation directions and
application notes relating to thermal desorption.
Also be sure to check out the related Adsorbent
Resin Section of our home pages.
- Now Completed on the Internet
(link outdated) Our section of books available from Scientific Instrument Services is now
complete on our home pages. Included in this section are text and reference
books on Mass Spectrometry, Gas
Chromatography, Liquid Chromatography,
General Chemistry, Laboratory Health and Safety, Resume Writting
and much more. As new books become available thise pages will be continually
Adsorbent resins are used in purge and trap thermal desorption applications
as well as for air sampling. SIS has accumulated a vast collection of information
of adsorbent resins and it is now available on the Internet. This section
contains the accumulation of more than 2 years work to compile the Breakthrough
Volume data on more than 200 analytes on 7 different adsorbent resins used
in Purge and Trap Thermal Desorption GC. Also included are articles to
aid in the selection of adsorbent resins, Backpressure data on the resins
and a large number of application notes. This is the most complete collection
of information on adsorbent resins ever compiled.
The mass spec tips section has just been completed as part of our home
page. Most of the entries were previously reported in our newsletter -
The Mass Spec Source. If you have additional questions that you would like
to ask here or tips that you would like to have included in these pages,
please contact us
SIS has completed the downloading of our Thermal
Desorption Application Notes
to the Internet. 33 of our application
notes relating the thermal desorption, cryo-trapping and headspace GC have
been completed. In order to transfer our application notes to the Internet
they had to be reformatted with larger graphics. As a result all the figures
and charts were redone using color graphics in many cases which makes for
a unique and colorful presentation of scientific data.
Next we will begin to download our past newsletters, mass spec tips
and also begin to compile the articles from our previous handbooks of service
and newsletters relating to mass spectrometers. We will compile and group
these articles by subjects such as multipliers, filaments, sources, etc.
for easy location and retrieval.
If you have any other suggestions for what should be included here,
please let us know.
Repair of Finnigan
SIS can now repair the filaments for the MAT TSQ7000 mass spectrometer.
This pin shaped filament requires additional time and materials to repair
due to its design and packaging. Therefore the price for the repair of
these TSQ7000 filaments is $50.00 each. The part number for this repair
is FILREP-7000. Repaired filaments perform as well as new filaments. New
filaments are not available from SIS.
Zero Air Generators
- Greater Performance at Lower Cost
The zero air generator Model 75-83 listed on page C-99 of our catalog has
been remodeled. This latest version air generator now produces ultra-zero
(<0.1 ppm hydrocarbon content) air at flow rates up to 1000 scc/min.
This performance improvement comes at the same time that the price has
been decreased to $976.00, a price decrease of over $130.00 . All other
performance specification remain the same.
Listing of Exact Masses
and Isotopic Abundance's for the Elements
As a new useful aid for the mass spectrometer user we now have the listings
of the exact masses for the elements on our web home page of up to 7 isotopes
for each of the elements. In addition we have included the isotopic abundance's
of each of the element isotopes in these charts. Two charts are available,
a listing alphabetically according to the elements common name and Numerically
according to the elements atomic number. Future additions to this section
include listings of neutral loss groups and common mass spec fragment ions.
If you would like to contribute to any of these sections or add a new chart
or compilation of data of use to the mass spec community, we
would like to here from you.
All authors will receive credit for their
Other Useful Aid for the Mass Spectrometer User listed in our Home Pages
SIS is beginning compilation of the Material Safety Data Sheets (MSDS)
of the products we distribute and manufacture that require this information.
This listing is still under construction but should be near complete by
October 15, 1995.
A new feature article
is now on line describing sources of GC contamination.
This article fully describes methods to minimize or eliminate GC and Thermal
desorption system background noise or peaks. Many users often blame Tenax®
adsorbent resins for background peaks in GC Thermal Desorption applications.
However our studies have shown this background does not normally originate
from the Tenax but from the GC injection port and capillary column. Utilizing
a high temperature flow conditioning of the GC injection port as well as
proper care and maintenance of the GC and thermal desorption system background
peaks can be minimized.
SIS 1995 and 1996 Meeting
Scientific Instrument Services will be at the following meetings and trade
shows during the next 12 months. If you are in the area, please stop by
and visit us.
November 13-16, 1995
Presentations at EAS by SIS
Pittsburgh Conference - Chicago, IL
March 4-7, 1995
Presentations at Pitt Con by SIS
American Society of Mass Spectroscopy - Portland, OR
May 12-17, 1996
Presentations at ASMS by SIS
SIS Now a Resource
of Information on the Internet
SIS Opened their internet home page on the WWW on September 6, 1995. Initially
more than 100 pages were downloaded. Major construction will continue for
the next 3 or 4 months. Eventually we plan to install our entire mass spec
catalog with an index to locate products. The major feature in our home
page is called MASS SPEC LINKS
. This section
is designed to be a reference source of information for the mass spec community.
So check it out.
SIS has developed a new probe inlet port for the HP 5988 and 5989 mass
spectrometers. This inlet will eliminate the accidental venting of the
mass spectrometer. A guide rod with automatic stops at the correct positions
enables the safe insertion and removal of the mass spec probe.
Part # PP300 HP 5988/5989 Probe Inlet with Automatic Stops Price: $2850.00
SIS can now supply the Triode Style Mini ion gauge tube used on the HP
5972 MSD. This is a direct replacement for the original HP ion gauge tube
used on the HP 5972.
Part # 342003 HP 5972 Triode Style Mini Ionization Gauge Tube Price: $156.25
Scientific Instrument Services now offers the service of mass spectrometer
source cleaning. Since we first advertised this service more than one year
ago, many of our customers have taken advantage of this new service. This
is NOT an exchange program. The same source that we receive from you is
cleaned and returned back to you ready to install into your mass spectrometer.
We offer 24 Hour Turn Around on Source Cleaning. Sources can be shipped
and returned via Federal Express for the fastest turn around.
A new 24 page booklet is available written by John Manura of Scientific
Instrument Services on the techniques and steps that have been taken to
improve the performance and signal-to-noise ratios on the HP 5971 MSD's
in our labs. This article combines the experience of more than 20 years
of expertise in mass spec to operate the mass spec at its peak performance.
The article also describes the improvement in performance by using new
higher sensitivity multipliers, high grade vacuum pump oils and other products
available from S.I.S.. Call or write for your FREE
A new high sensitivity electron multiplier for the HP 5970 MSD will be
available February 15, 1996
from S.I.S. This new multiplier (Galileo
) is manufactured by Galileo for S.I.S. and will improve
the performance of your MSD by a factor of at least 4 times. This is accomplished
by improving the signal to noise ratio and new design changes which have
been engineered into this multiplier. Receive a FREE HP Model 20S Scientific
Calculator with the purchase of each Galileo model 5772 multiplier.
Model 5772 multiplier for the HP 5970 - $745.00
A new high sensitivity multiplier is also available for the HP 5971, 5972
and GCD instruments. The new Galileo
Electron multiplier is in stock for immediate delivery.
Model 5778 multiplier for the HP 5971, 5972 and GCD - $695.00
New Kratos Mass Spec
A 4 page pamphlet of new parts and accessories for all models of Kratos
mass spectrometers is now available. Due to the increased difficulty of
getting parts for these instruments since most models have been discontinued,
S.I.S. has made a commitment to increase our efforts to supply more parts
for these instruments. Call for your free copy of this pamphlet.
New filaments for the Kratos are currently in the design stage and will
be available shortly. We are looking for beta test sites to evaluate their
performance. If you are interested, give us a call.
S.I.S. Awarded TRP
S.I.S. has recently been awarded a TRP grant to develop air, water and
soil sampling inlets for a field portable mass spec for environmental testing.
This project is being conducted in conjunction with Teledyne, Monsanto,
Phillips and Oakridge National Labs.
Tenax® is a registered trademark of Buchem BV.
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