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Home » Service » GDMS analysis
GDMS Analysis
General Specifications
- The VG9000
Glow Discharge Mass Spectrometer (VG
Elemental, UK) is used for both our
production control and regular service
measurements for customers from all over
the world.
- The VG9000
Glow Discharge Mass Spectrometer is
widely used for the characterization of
inorganic solids. Typically the system is
used for the direct analysis of trace and
ultratrace constituents in high purity
metals and semiconductors.
- Advantages:
- rapid
and direct analysis of solids
- limits
of detection in the range 0.5 to
5 ppb are typically achieved
- low
matrix effects
- reliable
quantitation
- The
liberation of material from the sample is
completely independent of the ionization
process. The independence minimizes
matrix effects and enables quantitative
data to be obtained with the minimum use
of standards. Utilization of both Faraday
cup and Daly detector enables to
determine major and trace elements in a single
analysis cycle.
- During sixteen
years we have gained an experience in
purity certification of those materials
as: Ga, GaAs, In, As, GaP, InSb, InP, Sb,
InAs, Ge, Si, Al, CdTe, Cu, Zr, Ti, Ta, Pt, Pt-Rh, Au,
Hg, steels, magnet alloy, Mo, W, Ga2O3,
TiO2, and graphite.
Limits of Detection
- Basically
we do analysis under two conditions which
differ by integration time ie. time of
one analysis run. Therefore the results
can be drawn as typical or low limit of
detection (LOD). For example both of LOD
for Gallium and GaAs are shown in the
table.
Sampling
- The sample
to be analysed is in form of the pin with
diameter max. 3 mm or cross section 2 x 2 mm
and lenght max. 22 mm. We need at least
two pins from every sample or adequate
part of sample to be able to cut to pin
form. In case of wafer it could be a part
of wafer with with thickness of 0,2 mm
minimum. Regarding Gallium samples we
need the minimum 10 g packed in PE bottle
or bag.
Results Turnaround
- We
guarantee to analyse your sample up to 7 days
from delivery to our lab (typically
up to 5 days). We routinely send results
by fax or e-mail.
Prices
- The price
depends on the type of the sample, the type
of the detection (typical detection
limit or low detection limits) and number
of samples to be analyzed per month. We
provide the price quotation table upon
request.
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