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Equipment Manager:
Saman (1-5514) GAS CHROMATOGRAPHS
Hewlett Packard 5890A (3 units): single FID, 1 capillary column capability, 2 packed column. The Hewlett Packard 6890 GC/MSD is a benchtop gc/ms available for your individual use after appropriate training. The HP6890 GC/MSD is comprised of a HP 6890 GC interfaced to a HP 5972 Mass Selective Detector Quadropole Mass Spectrometer. The system uses electron impact (EI) ionization and is capable of performing full mass scans or selective ion monitoring (SIM). The GC is set up for capillary columns. All samples have to be introduced through the GC interfaces, since no direct probe capability is available for this instrument. Several different types of capillary columns are available for the GC.
Specifications: Mass Spectrometer:
Gas Chromatograph:
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Waters 515 GPC |
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 Introduction
This GPC instrument is constructed from a few modules: Waters
515 HPLC pump, GPC columns and two detectors. It is operated through
Millenium32 software at 35 C. Operation privilege will be granted
to users after appropriate training by staff member. Currently samples
completely soluble in THF below 35 oC and having Mw range
2k Da to 1 M Da are suitable for its use. We will consider expanding
its capability for diverse samples upon request along the road.
RI detector (Waters 2410 refractometer) can analyze components with limited or no UV absorption, such as alcohol, fatty acids, esters. It also enables the use of eluents with elevated UV absorption. UV-Vis Detector (Waters 486 tunable absorbance detector) is a single-channel tunable UV-Vis detector. It provides a usable light intensity over the wavelength range of 190-600 nm, although its primary use is UV range between 190-380 nm. Currently, the wavelength is set at 254 nm. Column Two Supelco TSK-GEL, GMH6 columns are currently installed. 30cm x 7.8mm ID. Particle size:13 micron. Efficiency: 5500. Operating temperature: 35 C.
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Alliance GPCV 2000 |
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 Introduction
The Waters Alliance GPCV system, a new standard of performance
for polymer characterization, offers unprecedented flow reproducibility
and corresponding accuracy of each MW determination. The single-cabinet
design integrates solvent conditioning and delivery, sample preparation/injection,
refractive index detection, viscometer detection, along with a separate
user interface terminal. Its operation is controlled by GPC/V software
while the data processing is facilitated by Millennium. Operation
temperature can be programmed from ambient +5 to 180 oC.
It also accommodates a DAWN EOS light scattering detectors from Wyatt,
which is running at the same temperature as GPC. With this configuration,
not only relative Mw and MWD but also absolute Mw can be obtained.
Additionally polymer branching information can be obtained through
universal calibration and MALS.
Operation Condition 140 oC, mobile phase: TCB (tricholorobenzene), flow rate:1mL/min. Available Columns: Waters Styragel Columns
Sample preparation guidelines
Recommended Sample Concentrations
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Hewlett
Packard 5880A: single FID, capillary column, electronic integrator
Since this is a community instrument, sample cleanliness is
imperative. Any nonvolatile compounds that you inject onto the column
will be left behind and will cause future column and/or instrument
problems for you and all other users. All metals must be removed
from your samples and no acids or bases should be injected. You
must enter the identity of your sample in the instrument logbook
so that instrument problems can be traced to the injected compounds.
If you have any concerns about whether your sample is appropriate
for this instrument, check with 
