Helium and leak
detection:
which purity ?
Helium is commercialized in many different purity levels, the highest
level of purity is requested from some laboratories for fundamental
researches or very accurate analyses.
The use of the Helium as a tracer gas into a mass spectrometer
doesn’t require such attention. A purity in the range of 97 % to 99 %
is enough .
There is absolutely no risk of accuracy lost or contamination for the
cell analyzer by using standard purity level of Helium gas.
Helium ( Air Liquide and Linde sources, Europe)
Purity
Average market price (2004)
in €/m
3
99,9995 % 27
99,999 % 13
99,5 % 10
97,5 % 8
The gas producers as Air Liquide, Linde, Praxair, Sanfu and others
push customers to use high purity level for Helium, of course, because
cost and margin are higher and your mission by selling Helium
leak detector solution is to inform your customers about the mass
spectrometer requirement in term of helium purity.
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