The 797 VA Computrace from Metrohm is the modern
PC controlled voltammetric workstation for the determination
of trace metals - in addition many different organic
compounds and anions can also be quantified –
and thanks to the sophisticated intuitive software design
the operation is unbelievably simple.
The 797 VA Computrace offers at least equal sensitivity
for a fraction of the purchase price
of an ICP or AAS instrument all backed by the Swiss
guarantee of quality. The 797 VA Computrace
can be used as a standalone instrument or with differing
levels of automation for higher sample throughput to
meet application requirements.
1. Detection limits
for heavy metals in the ng/L region, essential for the
monitoring of ever decreasing regulatory consent levels
required to meet new EU directives.
2. Extremely low running
costs with no expensive flammable gases or
lamp changes needed, the 797 VA Computrace requires
only a single cylinder of nitrogen and good quality
deionised water.
3. Voltammetry is a recognised technique
with many official ISO, EPA, ASTM, AOAC and
DIN standards plus the HMSO Blue Book Method
for the "Determination of Some Trace Metals in
Marine and Other Waters".
4. Versatility – quantification
of heavy metals, organics and anions using the same
instrument. The determination of organic additives in
electroplating baths can be performed with optional
accessories.
5. Speciation studies possible allowing
statements to be made about the biological availability
and toxicity of heavy metals making it an essential
research tool for academia.
6. Calibration on every sample using
standard addition eliminating many of the matrix effects
seen in spectroscopic techniques and ensuring the correct
result is reported.
7. Ability to determine samples
with high ionic concentrations meaning the
analysis of saline solutions, pure chemicals, electroplating
baths and foodstuffs is no longer an analytical problem
unlike with spectroscopic techniques.
8. Small footprint – less than
a metre – requires no change to existing laboratory
infrastructure or the installation of expensive fume
extraction.
9. Quality Assurance – the
PC software allows the validation intervals of the analysis
system to be defined and comes with a built in software
diagnosis.
10. Swiss quality guarantees performance
and reliability plus that the comprehensive
support expected from a World Leader
of Ion Analysis for more than 60 years.
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