By Hu Yulan on Wednesday, June 9, 2004 - 07:46 pm:

The corona current is not stable in APCI(-) mode while in APCI(+), the current is stable. Does anyone have the idea about this?

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By MG on Thursday, June 10, 2004 - 06:21 am:

What type of instrument do you have? Do you set a current or a voltage through your software? Either way, what are the settings you are using in both modes? Is it producing an error condition with your instrument?