What is the Harvard Apparatus Pump 33 DDS™?

The Harvard Apparatus Pump 33 DDS™ (Dual Drive System) is a uniquely engineered dual-channel syringe pump that provides two completely independent, synchronized drive mechanisms within a single compact housing. Unlike conventional dual-syringe pumps that share a single drive motor, the Pump 33 DDS allows each channel to operate independently with its own flow rate, volume target, and direction — enabling advanced infusion/withdrawal paradigms impossible with single-drive systems.

With flow rates spanning from 1.02 pl/min to 106 ml/min per channel and a 7" LCD touchscreen interface, the Pump 33 DDS is designed for demanding applications including push-pull microdialysis, dual-reagent mixing, gradient generation, and split-flow microfluidic experiments in both animal and cell-based research.

Key Features

• Truly Independent Dual Drive System: Each of the two channels has its own independent stepper motor and drive mechanism, allowing simultaneous infusion at different flow rates, independent withdrawal, or perfectly synchronized bidirectional operation.
• Ultra-Wide Flow Range: Delivers flow rates from 1.02 pl/min to 106 ml/min per channel, supporting ultra-precise microfluidic delivery through high-volume physiological perfusion in a single instrument.
• 7" Color LCD Touchscreen: Large, intuitive touchscreen with channel-by-channel control, enabling independent programming of each drive motor from one unified screen.
• Push-Pull Microdialysis Optimized: The independent dual drives are specifically suited for push-pull perfusion — infusing artificial CSF while simultaneously withdrawing dialysate at matched flow rates, eliminating the need for two separate pumps.
• Advanced Per-Channel Programming: Supports complex multi-step methods with ramps, I/O triggers, and gradient programming per channel, all storable on-device.
• Daisy-Chain Compatible: RS-485 interface supports multi-pump daisy chaining for integration with larger automated experimental systems.