rLabS4 Four-Channel Independent Peristaltic Pump

The rLabS4 uses a 10-roller DG pump head and accepts four tubing sizes (inner diameter × wall): 0.5 × 0.8 mm (0.0013–2 mL/min), 1 × 1 mm (0.006–9 mL/min), 2 × 1 mm (0.022–33 mL/min), and 3 × 1 mm (0.032–48 mL/min). The interface shows the maximum achievable flow for whichever tubing is installed, so tubing can be sized to the flow target before a run starts.

Yes. Every channel is fully independent, with its own speed, flow, and calibration parameters. Each channel can be assigned its own work mode (flow, timed + fixed-quantity, timed + fixed-speed, or fixed-quantity + fixed-speed) and run concurrently with the others. Individual channels can be closed from the touchscreen and reopened later without disturbing the rest.

The pump exposes both RS485 and USB communication interfaces and accepts external start/stop via a dedicated control line or footswitch. Because flow and speed can be adjusted online while the pump is running, it can be driven from an external controller — for example, closing a dosing loop based on a pH, OD, or temperature reading.

Speed resolution is 0.01 rpm across the full 0.01–150 rpm range, and each channel is individually calibrated. With 0.5 × 0.8 mm tubing this delivers stable flows down to approximately 1.3 µL/min, which makes the rLabS4 appropriate for microfluidic feeding, organoid perfusion, and slow-drip infusion protocols.

Yes. Calibration parameters are stored per channel, and the fixed-quantity and timed work modes retain their setpoints, so a protocol configured once can be recalled on the next run. The 5-inch color touchscreen also shows live flow rate and remaining time for timed and fixed-quantity runs, so the pump can be checked against the programmed volume.

Yes. The rLabS4 features an integrated 10-roller pump head — no separate pump head purchase is needed.