Axis BTA 2100D Manual do Operador Página 166

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Setting the Reagent Pressure for Liquid CI Reagents
Connect a liquid reagent reservoir containing the chosen liquid to the liquid
reagent inlet block.
Open the CI needle valve 6-7 turns counterclockwise.
Open the CI gas valve solenoids by clicking on the CI Gas Control on the System
Control page and allow the vapor flow from the reservoir to equilibrate. If, after
several minutes, there is not enough CI gas entering the trap, further open the
needle valve (clockwise).
While observing the spectrum using Adjust CI Gas, turn the CI needle valve to
increase or decrease the amount of reagent entering the trap until the resolution
between M and M+1 just starts to degrade. For best results when using
acetonitrile, use a filament emission current of at least 20 A and maintain at
least 50% valley between m/z 41 and m/z 42.
Properly Adjusted Acetonitrile Reagent Spectrum
Properly Adjusted Methanol Reagent Spectrum
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