Operating In Chemical Ionization (Ci) Mode; Setting Up Your Ms To Operate In Ci Mode - Agilent Technologies 7200 Operation Manual

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Operating in Chemical Ionization (CI) Mode

Setting Up Your MS to Operate in CI Mode

Setting Up Your MS to Operate in CI Mode

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Setting up your MS for operation in CI mode requires special
care to avoid contamination and air leaks.
• Always use the highest purity methane (and other reagent
gases, if applicable). Methane must be at least 99.9995% pure.
• Always verify the MS is performing well in EI mode before
switching to CI.
• Make sure the CI ion source is installed.
• Make sure the reagent gas plumbing has no air leaks. This is
determined in PCI mode, checking for m/z 32 after the
methane pretune.
• Make sure the reagent gas inlet line is equipped with gas
purifiers (not applicable for ammonia).
Operation Manual