Table 4.
Design 1 (single-channel, trivalve) solenoid actuation sequence.
| Region | Duration (s) | Channel Content | Solenoid Status |
|---|---|---|---|
| I | - | Dry | Off |
| II | 25 | Dry (DI inlet) | On |
| III | 30 | DI | Off |
| IV | 25 | DI flush/300 µM inlet | On |
| V | 30 | 300 µM NaCl | Off |
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