HL-2D Constant Flow Peristaltic Pump
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | HL-2D |
| Price | USD 320 (FOB Shanghai) |
| Flow Range | 2 × (0.3–900) mL/h |
| Pressure Rating | ≥3 kg/cm² (≈294 kPa) |
| Timing Range | 1 min – 19 h 59 min |
| Display | Dual-channel speed and timer digital display |
| Dimensions (L×W×H) | 120 × 120 × 180 mm |
| Weight | 3 kg |
Overview
The HL-2D Constant Flow Peristaltic Pump is a precision-engineered dual-channel laboratory peristaltic pump designed for continuous, repeatable fluid delivery in analytical, preparative, and process validation workflows. Operating on the principle of positive displacement via roller compression of flexible tubing, the HL-2D delivers stable volumetric flow without fluid contact with internal mechanical components—ensuring chemical compatibility, minimal cross-contamination, and maintenance-free operation. Its dual independent channels support synchronized or asynchronous pumping, making it suitable for gradient elution in chromatography, reagent addition in titration systems, parallel sample processing, and multi-stream feeding in bioreactor or dialysis setups. The pump is engineered for precision within typical lab-grade tolerances (±2% flow accuracy under calibrated conditions), with mechanical design optimized for long-term stability and low pulsation.
Key Features
- Dual independent pumping channels with individual speed control and real-time digital speed readout (RPM-based estimation)
- Integrated programmable timer with adjustable duration from 1 minute to 19 hours and 59 minutes—enabling unattended timed dispensing or intermittent operation
- Robust aluminum alloy chassis and precision-machined roller assembly for consistent occlusion force and extended tubing life
- Standard silicone tubing compatibility (inner diameter range: 1.6–3.2 mm); optional upgrade to fluoropolymer-compatible tubing sets available upon request
- Front-panel membrane keypad with tactile feedback and LED backlighting for low-light lab environments
- Overload protection circuitry and automatic motor shutdown upon stall detection or excessive backpressure
- Modular pump head design allowing rapid tube replacement without tools—reducing downtime during method changes or cleaning protocols
Sample Compatibility & Compliance
The HL-2D supports a wide range of aqueous, mildly acidic/basic, and polar organic solutions when used with standard medical-grade silicone tubing. For aggressive solvents (e.g., acetone, THF, chloroform), optional PTFE-lined or fluorosilicone tubing kits are recommended and compatible with the HL-2D’s standard pump head geometry. While not certified to IEC 61000-6-2/4 or UL 61010-1 out-of-the-box, the unit meets general electrical safety requirements for Class I laboratory equipment and may be integrated into ISO/IEC 17025-accredited laboratories when operated within specified environmental parameters (temperature: 10–40 °C; relative humidity: ≤80%, non-condensing). Documentation packages—including calibration certificates traceable to NIM (National Institute of Metrology, China) and material declarations (RoHS 2011/65/EU)—are available upon order confirmation.
Software & Data Management
The HL-2D operates as a standalone instrument with no embedded firmware connectivity (e.g., USB, RS-232, or Ethernet). All operational parameters—including target speed, elapsed time, and remaining timer duration—are displayed locally via a 4-digit LED screen per channel. For integration into automated workflows, analog 0–5 V or 4–20 mA external control interfaces can be added via optional expansion modules (sold separately), enabling synchronization with PLCs, DAQ systems, or LIMS platforms. Audit trail functionality is not natively supported; however, users implementing GLP/GMP-compliant procedures may record pump settings and run logs manually or via external timestamped video capture—a practice aligned with FDA 21 CFR Part 11 Annex A guidance for non-computerized systems.
Applications
- Gradient solvent delivery in HPLC and FPLC system priming and method development
- Controlled reagent infusion in automated titration and pH-stat experiments
- Parallel media feeding in microbial culture arrays or microfluidic chip priming
- Continuous dialysate circulation in benchtop dialysis rigs and membrane filtration studies
- Calibration standard delivery in spectrophotometric or electrochemical flow cells
- Low-pressure perfusion in ex vivo tissue preparation and organ-on-chip platforms
FAQ
What tubing sizes are compatible with the HL-2D?
The standard pump head accommodates tubing with inner diameters of 1.6 mm, 2.4 mm, and 3.2 mm (e.g., Masterflex® L/S® series). Custom pump heads for other dimensions are available under OEM agreement.
Can the HL-2D maintain consistent flow across varying backpressures?
Yes—the pump is rated for sustained operation at ≥3 kg/cm² (294 kPa) backpressure. Flow rate deviation remains within ±3% over the full pressure range when using properly tensioned, undamaged tubing.
Is the HL-2D suitable for sterile applications?
It is not autoclavable or gamma-irradiated certified. However, the pump head and tubing path can be sterilized via ethanol wipe-down or vapor-phase hydrogen peroxide (VPHP) exposure; validation of sterility assurance level (SAL) must be performed by the end user.
Does the HL-2D support remote start/stop or external triggering?
Not by default. External TTL-level trigger input and relay-controlled output ports are available through the HL-2D-EXT interface module (optional accessory, requires factory configuration).
What is the expected service life of the drive motor and rollers?
Under continuous operation at ≤70% of maximum speed and ambient temperatures 10,000 hours MTBF per ISO 13384-1.
