FAQ - Frequently Asked Questions

Maintenance of the APCI Unit

 

WARNING: The inside of the APCI unit reaches high temperatures and you must wait until the temperature has decreased sufficiently before starting work.

 

CAUTION: When performing APCI analysis in which a halogenated mobile phase additive is used, note the following:
    In the APCI method, the analyte is heated to high temperatures. If the mobile phase contains a halogenated compound such as chloroform, a corrosive gas will be produced. Even a small percentage concentration of halogens in the mobile phase can cause corrosion.
    Use SUS tubes to connect the high performance liquid chromatograph to the instrument. PEEK resin tubes do not have sufficient strength and should they rupture, solvent may blow out.
    Black particles may build up inside the APCI unit, and around the DL and the heated block.
    Because of exposure to corrosive gases, you may need to replace the following parts at a shorter interval than specified.

 

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