The Dionex DRS 600 and Dionex ERS 500e operation modes depend mainly on the eluent composition, the analysis sensitivity requirements, and the sample matrix.
For example, eluents containing organic solvents that tend to oxidize easily are not compatible with the AutoSuppression Recycle Mode. The AutoSuppression External Water Mode should be used instead, or a Dionex CRS suppressor employed in Chemical Suppression Mode. The MPIC Suppression Mode is specifically designed for applications where ion-pair reagents and solvents are present in the eluent.
See the following table for eluent composition and suppression mode compatibility.
NOTE
Neutralization Mode can be used with any eluent composition.
Eluent Composition | Recycled Eluent Mode | External Water Mode | Chemical Regeneration Mode1) | MPIC Suppression |
|---|---|---|---|---|
Aqueous Eluents (excluding Borate, Carbonate) | DRS 600 | DRS 600 | DRS 600 | No |
Aqueous Borate Eluents | No | DRS 600 | DRS 600 CRS 500 | No |
Aqueous Carbonate Eluents | ADRS 600 | ADRS 600 | ADRS 600 | No |
Aqueous Eluents containing solvents up to 40% | No | DRS 600 | DRS 600 | DRS 600 |
Eluents containing solvents up to 100% | No | No | DRS 600 CRS 500 | DRS 600 |
Eluent containing Ion Pair Reagents | No | No | No | DRS 600 |
Simple Aqueous Samples | DRS 600 | DRS 600 | DRS 600 | DRS 600 |
Complex Aqueous Samples | No | DRS 600 | DRS 600 | DRS 600 |
Samples Containing Solvents | No | DRS 600 | DRS 600 | DRS 600 |