Cole-Parmer 74901-82 Dual-Channel Programmable Syringe Pump System with Multi-Pump Synchronization Capability
| Brand | Cole-Parmer |
|---|---|
| Origin | USA |
| Model | 74901-82 |
| Flow Rate per Channel | 0.4 nL/h to 106.6 mL/min |
| Accuracy | ±0.35% |
| Repeatability | ±0.1% |
| Plunger Displacement Speed | 0.7267 nm/min to 95.25 mm/min |
| Syringe Volume Range | 0.5 µL to 140 mL |
| Linear Force | 25.8 kg |
| Output Interfaces | RS232, TTL |
| Dimensions (L×W×H) | 31.1 × 15.2 × 28.6 cm |
| Power Supply | 220–260 V, 50 Hz, CE-certified |
Overview
The Cole-Parmer 74901-82 is a precision-engineered dual-channel programmable syringe pump system designed for high-fidelity fluid delivery and withdrawal in research, analytical, and process development laboratories. Based on positive displacement actuation via stepper motor-driven linear actuators, it delivers volumetrically accurate and temporally synchronized flow across two independent channels—enabling simultaneous injection and aspiration within a single instrument footprint. Its architecture supports deterministic control of micro-to-milliliter-scale volumes over extended durations, making it suitable for applications requiring strict temporal coordination, such as gradient elution in preparative chromatography, multi-reagent dosing in automated synthesis, or closed-loop perfusion in organ-on-chip systems. The system’s mechanical design ensures minimal pulsation and high positional resolution, with plunger motion controlled down to sub-nanometer increments—critical for ultra-low-flow applications including nanoliter-scale microinjection and electrophysiology calibration.
Key Features
- Dual independent channels with fully programmable operation: one channel may be configured for infusion while the other executes withdrawal—each with independent speed, volume, and direction settings.
- Four operational modes: co-directional pumping, counter-directional pumping, fixed flow ratio between channels, and continuous run mode with optional auto-stop upon target volume completion.
- Scalable system architecture: up to 100 units can be daisy-chained via dedicated synchronization cables (Cat. No. 74901-87), enabling centralized timing and coordinated multi-pump workflows without external PLC intervention.
- Integrated TTL and RS232 interfaces support bidirectional communication with host computers, data acquisition systems, or laboratory automation platforms—enabling script-driven protocols compliant with LabVIEW, Python, or MATLAB environments.
- Optional accessories include pressure-rated solenoid valve modules (up to 200 psi), footswitch activation (Cat. No. 74901-86), and valve control boxes (Cat. No. 74901-80 / 74901-82) for unattended 24-hour sequencing under defined pressure thresholds.
- Backlit LCD interface provides real-time display of flow rate, elapsed time, remaining volume, and error status—optimized for ambient-lit and low-light benchtop environments.
Sample Compatibility & Compliance
The 74901-82 accommodates standard Luer-lock and threaded syringes ranging from 0.5 µL glass microsyringes to 140 mL industrial barrels, supporting compatibility with aqueous, organic, viscous, and mildly corrosive media when paired with chemically resistant syringe barrels (e.g., glass, PTFE-lined, or stainless-steel). All firmware and hardware configurations adhere to IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emission) standards. CE marking confirms conformity with the EU Medical Devices Directive (MDD) Annex I essential requirements for non-invasive laboratory equipment. While not classified as a medical device under FDA 21 CFR Part 820, its RS232 logging capability and deterministic execution model support audit-ready operation in GLP-compliant environments where traceability of fluid delivery parameters is required.
Software & Data Management
The pump operates autonomously via front-panel programming but is fully controllable through Cole-Parmer’s proprietary PumpControl software (Windows-compatible), which enables creation and storage of multi-step protocols—including ramped flow profiles, conditional branching based on TTL input signals, and timestamped event logging. All executed commands and real-time status variables (e.g., actual position, motor current, thermal load) are streamed via RS232 and can be captured in CSV format for post-hoc analysis. Audit trail functionality—including user ID tagging, command timestamping, and parameter change history—is available when integrated into validated LIMS or ELN platforms meeting FDA 21 CFR Part 11 requirements via third-party middleware.
Applications
- Automated reagent addition in high-throughput screening (HTS) and assay development workflows.
- Synchronized dual-syringe delivery for pH-stat or redox titrations requiring precise stoichiometric balance.
- Long-duration perfusion of 3D cell cultures and microphysiological systems with programmable flow modulation.
- Calibration of mass flow meters and pressure transducers using gravimetrically verified dispense events.
- Integration into custom-built reaction manifolds for flow chemistry, where timing-critical reagent mixing dictates product selectivity.
- Controlled solvent delivery in preparative HPLC fraction collection systems with trigger-based valve actuation.
FAQ
What is the maximum number of pumps that can be synchronized in a single network?
Up to 100 units may be interconnected using the dedicated synchronization cable (Cat. No. 74901-87), with master-slave timing governed by internal clock distribution.
Can this pump operate in a GMP-regulated environment?
Yes—the deterministic execution, RS232 data logging, and protocol versioning support integration into validated systems; however, formal GMP validation must be performed by the end user per their SOPs and regulatory scope.
Is firmware upgrade supported remotely?
Firmware updates require local connection via RS232 and use of Cole-Parmer’s PumpControl utility; no over-the-air update capability is provided.
What syringe materials are recommended for organic solvent handling?
Glass syringes with PTFE-tipped plungers or stainless-steel syringes are recommended for compatibility with acetonitrile, THF, DCM, and other common organics; avoid polypropylene or polyethylene barrels in such applications.
Does the system support analog input for external flow feedback control?
No—the 74901-82 does not feature analog input; closed-loop flow correction requires integration with external flow sensors and a programmable logic controller or host computer running PID control algorithms.
