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Operation and Maintenance Manual 79
can be achieved by eliminating the lower plasma. This is accomplished by
plugging the side port of the splitter fitting and teeing the air into the lower
hydrogen line, much like the configuration used for Nitrosamine analysis as
shown in Figure 9. A slightly lower air flow rate, such as 40 SCCM and a
hydrogen flow rate of around 60 SCCM is used. Sensitivity of around 0.1 pg
S/sec or less should be readily achievable. It is not possible to cover all
potential applications, so some optimization may be desirable.