8-Channel Precision Glass Syringe Pump
Eight-channel precision syringe pump with borosilicate glass syringes, supporting 250 μL to 10 mL volumes and variable flow rates with touchscreen control.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The 8-Channel Precision Glass Syringe Pump delivers precise microfluidic control across eight independent channels, supporting flow rates from 40 to 6400 steps per second. The system employs borosilicate glass syringes with PTFE components, accommodating volumes from 250 μL to 10 mL per channel. A 5-inch touchscreen interface provides intuitive operation, while RS-232 and RS-485 connectivity enable integration with automated systems and data acquisition platforms.
This pump addresses the need for simultaneous, independent fluid delivery in complex microfluidic applications where precise volumetric control is essential. The glass construction ensures chemical compatibility with a broad range of solvents and biological media, while the multi-channel architecture supports parallel experimental workflows and gradient generation protocols.
How It Works
The syringe pump operates on the principle of positive displacement, where a stepper motor-driven mechanism advances and retracts syringe plungers at precisely controlled rates. Each channel employs an independent drive system, allowing simultaneous operation of eight syringes with different flow rates and volumes. The stepper motor resolution of 40-6400 steps per second provides fine control over flow rates, with actual volumetric flow dependent on syringe diameter and programmed step frequency.
Borosilicate glass syringes offer superior chemical resistance and dimensional stability compared to plastic alternatives, maintaining accuracy across temperature variations and exposure to organic solvents. PTFE seals and components minimize sample carryover while providing compatibility with aggressive chemicals. The pump's control system monitors plunger position and calculates delivered volumes based on syringe geometry and step count.
The integrated touchscreen interface allows real-time programming of flow profiles, including constant flow, ramping, and pulsed delivery modes. Serial communication protocols enable external control from laboratory automation systems or data acquisition computers, supporting integration into complex analytical workflows.
Features & Benefits
Channels
- 8
Syringe Material
- Borosilicate glass + PTFE
Syringe Range
- 250 uL - 10 mL
Flow Rate
- 40-6400 steps/s
Interface
- 5" touchscreen, RS-232, RS-485
Automation Level
- semi-automated
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Cell Biology
- Environmental Monitoring
- Materials Science
- Pharmaceutical QC
Weight
- 8.5 kg
Dimensions
- L: 260.0 mm
- W: 250.0 mm
- H: 350.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Number of Channels | 8 independent channels | Entry-level models typically offer 1-4 channels | Enables parallel experimental protocols and complex gradient generation without multiple pump units |
| Syringe Volume Range | 250 μL to 10 mL capacity range | Limited syringe compatibility or narrower volume ranges | Accommodates both microscale and preparative applications with a single instrument |
| Flow Rate Control | Variable 40-6400 steps/s range | Fixed or limited step rate options | Provides fine control over flow rates spanning four orders of magnitude |
| User Interface | 5-inch touchscreen with RS-232/RS-485 | Basic LED displays or limited connectivity | Offers intuitive operation and seamless integration with automated systems |
| Construction Materials | Borosilicate glass syringes with PTFE seals | Plastic syringes or limited chemical compatibility | Ensures compatibility with aggressive solvents and maintains long-term accuracy |
| Form Factor | Compact 260 × 250 × 350 mm design | Larger footprint for multi-channel systems | Maximizes benchtop space efficiency while providing 8-channel capability |
This pump combines multi-channel capability with precision glass construction and intuitive touchscreen control. The 8-channel configuration addresses complex experimental needs while maintaining the accuracy and chemical compatibility expected from glass syringe systems.
Practical Tips
Verify volumetric accuracy using gravimetric methods with water at room temperature, comparing delivered volumes to mass measurements.
Why: Gravimetric calibration provides the most accurate assessment of pump performance across the operating range.
Replace PTFE seals whenever switching between incompatible solvents or when observing decreased accuracy.
Why: Contaminated or swollen seals compromise volumetric precision and can introduce sample carryover.
Prime all channels thoroughly before critical experiments, running several syringe volumes to eliminate air bubbles.
Why: Air bubbles create compressible volumes that reduce flow accuracy and cause irregular delivery patterns.
If flow rates appear inconsistent, check for loose tubing connections and verify syringe mounting alignment.
Why: Mechanical looseness introduces variability in the fluid path and affects volumetric accuracy.
Record syringe serial numbers and calibration dates when documenting experimental protocols.
Why: Syringe-specific variations can affect reproducibility, particularly in quantitative applications.
Use appropriate secondary containment when pumping hazardous materials, and ensure adequate ventilation for volatile solvents.
Why: Precision pumps can generate significant pressures, increasing the risk of leaks with dangerous chemicals.
Match syringe sizes to expected volumes, using smaller syringes for better precision at low flow rates.
Why: Syringe resolution scales with diameter, optimizing accuracy for the specific application range.
Clean glass syringes with appropriate solvents immediately after use to prevent sample precipitation and cross-contamination.
Why: Dried samples can damage syringe surfaces and compromise long-term volumetric accuracy.
Setup Guide
What’s in the Box
- 8-Channel Precision Glass Syringe Pump main unit
- Power adapter and cord (typical)
- User manual and quick start guide (typical)
- RS-232 communication cable (typical)
- Calibration certificate (typical)
- Mounting hardware (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship. Technical support includes operation guidance, troubleshooting assistance, and calibration consultation.
Compliance
What is the volumetric accuracy specification for different syringe sizes?
Consult the product datasheet for specific accuracy specifications. Accuracy typically depends on syringe volume, with smaller syringes generally providing higher relative precision.
Can the pump generate smooth flow profiles without pulsation?
The stepper motor drive system minimizes pulsation compared to peristaltic pumps. Flow smoothness depends on step rate settings and syringe diameter - higher step rates generally produce smoother flow.
What chemicals are compatible with the borosilicate glass and PTFE components?
Borosilicate glass offers excellent chemical resistance to most acids, bases, and organic solvents. PTFE seals are compatible with aggressive chemicals except molten alkali metals and fluorine gas at high temperatures.
How do I integrate the pump with external control software?
Use RS-232 or RS-485 interfaces with standard serial communication protocols. The system supports common commands for flow rate setting, volume programming, and status monitoring.
What maintenance is required for long-term accuracy?
Regular cleaning of syringe barrels and replacement of PTFE seals prevents contamination and maintains volumetric accuracy. Periodic calibration verification using gravimetric methods is recommended.
Can different syringe sizes be used simultaneously across channels?
Yes, each channel accommodates independent syringe selection from 250 μL to 10 mL, allowing optimization of flow ranges and resolution for different applications.
What is the minimum achievable flow rate?
Minimum flow rate depends on syringe diameter and lowest step frequency (40 steps/s). Smaller syringes enable lower absolute flow rates for microfluidic applications.
Does the pump store programmed protocols for repeated use?
Consult the product manual for specific memory and programming capabilities. Most precision pumps include protocol storage for complex multi-step delivery sequences.
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