Cole-Parmer 74900 Series Dual- and Quad-Channel Nanoliter Syringe Pumps
| Brand | Cole-Parmer |
|---|---|
| Model | 74900 |
| Origin | USA |
| Pump Type | Syringe Pump |
| Flow Rate Range (Dual-Channel) | 0.001 µL/hr – 0.351 mL/min |
| Flow Rate Range (Quad-Channel) | 0.001 µL/hr – 21 mL/min |
| Syringe Compatibility (Dual) | 10 µL – 60 mL |
| Syringe Compatibility (Quad) | 10 µL – 10 mL |
| Accuracy | <1% |
| Repeatability | ±0.1% |
| Linear Force | 177 N |
| Dimensions (W×H×D) | 28 × 23 × 15 cm |
| Power Supply | 230 VAC, 50/60 Hz |
| Stepper Motor Drive | Microstepping for Pulse-Free Delivery |
Overview
The Cole-Parmer 74900 Series dual- and quad-channel nanoliter syringe pumps are precision-engineered fluid delivery systems designed for applications demanding ultra-low flow rates, high volumetric accuracy, and exceptional pulse suppression. Based on microstepping stepper motor actuation coupled with linear lead-screw translation, these pumps operate via positive displacement—translating rotational motion into precise, repeatable plunger advancement within standard Luer-lock syringes. Unlike peristaltic or diaphragm-based pumps, syringe pumps eliminate elastomeric compression artifacts and deliver true laminar, non-pulsatile flow essential for microdialysis, electrophysiology, microfluidics interfacing, and low-volume reagent dosing in analytical and life science workflows. The 74900 platform supports both independent and synchronized multi-channel operation, enabling programmable gradient delivery, parallel sample infusion, or differential flow control across up to four discrete fluid paths—all without cross-contamination or mechanical coupling between channels.
Key Features
- Microstepping stepper motor drive architecture ensures sub-microliter resolution and eliminates flow pulsation inherent in coarse-step or DC-driven systems.
- Integrated syringe parameter library automatically recognizes syringe barrel geometry (diameter, material, plunger type) upon installation—reducing setup time and minimizing user-induced calibration errors.
- Dual-channel configuration accommodates either a single 60 mL syringe per channel or two 10 mL syringes simultaneously; quad-channel version supports up to four independently controlled 10 mL syringes with full size flexibility per channel.
- High linear force output (177 N) enables reliable actuation of viscous media, high-backpressure microfluidic circuits, and extended-duration infusions without stalling or positional drift.
- Front-panel interface with intuitive menu navigation and real-time flow/pressure status indicators supports standalone operation; optional RS-232 and USB connectivity enable remote command execution and script-based protocol sequencing.
Sample Compatibility & Compliance
The 74900 Series is compatible with all standard glass, plastic, and metal syringes conforming to ISO 594-1 and ISO 8536-4 specifications, including Hamilton, BD, and SGE brands. Each channel accepts syringes ranging from 10 µL to 60 mL (dual) or 10 µL to 10 mL (quad), with automatic diameter detection ensuring accurate volume-to-displacement conversion. The system meets IEC 61010-1 safety requirements for laboratory electrical equipment and complies with electromagnetic compatibility standards EN 61326-1. While not certified as medical devices, its performance characteristics—including <1% volumetric accuracy and ±0.1% repeatability over 24-hour continuous operation—align with GLP and GMP documentation expectations for method validation in QC laboratories and regulated research environments.
Software & Data Management
The pump operates natively via front-panel controls but integrates seamlessly with Cole-Parmer’s PumpControl software (Windows-compatible) for advanced programming: multi-step ramp profiles, timed start/stop sequences, conditional triggers, and real-time data logging at user-defined intervals. All executed protocols include timestamped audit trails with operator ID fields, supporting 21 CFR Part 11–compliant electronic record retention when deployed with validated system configurations. Export formats include CSV and XML, facilitating direct ingestion into LIMS platforms or statistical analysis tools such as JMP or Python-based Pandas workflows.
Applications
- Microdialysis sampling and analyte infusion in awake, freely moving rodent models.
- Controlled delivery of neurotransmitters, drugs, or tracers during in vivo electrophysiology experiments.
- Low-flow mobile phase introduction in capillary electrophoresis and nano-LC systems.
- Calibration fluid dispensing in trace-level environmental or clinical immunoassays.
- Parallel reagent loading in high-throughput screening microplates using multi-tip manifold adapters.
FAQ
Can the dual-channel model operate two different syringe sizes simultaneously?
Yes—the dual-channel 74900-55 allows independent configuration per channel, supporting mismatched syringes (e.g., 10 µL on Channel A and 60 mL on Channel B) with full parameter retention.
Is firmware update capability available?
Yes—firmware upgrades are delivered via USB stick and applied through the front-panel utility menu; release notes document traceable changes per ISO/IEC 17025 change control requirements.
Does the pump support pressure monitoring or feedback control?
No—this is an open-loop, position-controlled syringe pump. For pressure-closed-loop applications, integration with external transducers and third-party PID controllers is required.
What maintenance is recommended for long-term reliability?
Annual verification of lead-screw lubrication and motor torque calibration is advised; syringe mount alignment should be checked biannually using included alignment gauge.
Are replacement syringe holders available for custom configurations?
Yes—Cole-Parmer offers interchangeable mounting brackets (P/N 74900-01 series) compatible with non-standard syringe geometries, including glass capillaries and custom-machined reservoirs.
