Selecting a Default Waveform for Integrated Amperometry

Detector Control
Selecting a Default Waveform for Integrated Amperometry

Chromeleon provides default waveforms for the AgCl, pH, and PdH reference modes. You can use these waveforms as is, or modify them for your own applications. If you modify one of the default waveforms, you must save it with a different name. The default waveforms are read-only.

Waveform Name	Waveform Description	Working Electrode*	Reference Mode**	Comments
Gold, Ag-AgCl RE, Carbo, Quad	Carbohydrates, Quad Potential, Ag/AgCl Ref	Au disposable (P/N 060139; pkg. of 6)	AgCl	Can be used with disposable gold electrodes.
Gold, PdH RE, Carbo, Quad	Carbohydrates, Quad Potential, PdH Ref	Au disposable (P/N 060139; pkg. of 6)	PdH	Currently supported only for carbohydrate detection on gold electrodes (gaskets for capillary format required). To use PdH referencing for other applications, contact Technical Support for Dionex products for the latest information and/or see the Note below.
Gold CWE, Ag-AgCl RE, Carbo, Triple	Carbohydrates, Triple Potential, Conventional Electrode Only	Au (P/N 044112)	AgCl	DO NOT use with disposable gold electrodes; dissolves gold and can cause reproducibility problems.
Gold, Ag-AgCl RE, AAA	Amino Acids, Carbohydrates, Water-Soluble Vitamins	Au disposable (P/N 060082; pkg. of 6)	AgCl	For research tasks (e.g, waveform development or separation optimization), use non-disposable gold electrode (P/N 055832).
Gold, pH-Ag-AgCl RE, AAA	Amino Acids, Carbohydrates, Water-Soluble Vitamins	Au disposable (P/N 060082; pkg. of 6)	pH	For research tasks (e.g, waveform development or separation optimization), use non-disposable gold electrode (P/N 055832).
Platinum, Ag-AgCl RE, Acidic	Alcohols, Glycols, Carboxylates, Cyanide	Pt (P/N 044113)	AgCl	Use with platinum electrodes only.
Platinum, Ag-AgCl RE, Acidic (Old)	Alcohols, Formic Acid, Glycols	Pt (P/N 044113)	AgCl	Use with platinum electrodes only.
Silver, Ag-AgCl RE, S-2, CN-, I-, S2O3-2, Alkaline	Sulfide, Cyanide, Iodide, Thiosulfate	Ag disposable (P/N 063003; pkg. of 6)	AgCl
Silver, Ag-AgCl RE, Br-, SCN-, Alkaline	Bromide, Thiocyanate	Ag disposable (P/N 063003; pkg. of 6)	AgCl
* Working electrode only (does not include complete electrode cell).
** The same combination electrode (P/N 044198) is used for both the AgCl and pH reference modes.

Note on Converting Ag/AgCl Waveforms for the PdH Reference Electrode

If you want to convert a Ag/AgCl-referenced waveform for use with the PdH reference electrode, add the following potential offset value to each potential of the waveform:

Potential Offset = (eluent pH x 59) + 148

Note:

To date, this calculation has been confirmed for alkaline, aqueous eluents only. Contact Technical Support for Dionex products for information regarding PdH referencing in other types of chromatographic eluents.