Jiapeng HL-2B Dual-Channel Digital Peristaltic Pump

Overview

The Jiapeng HL-2B is a dual-channel digital peristaltic pump engineered for precise, repeatable fluid delivery in laboratory-scale chromatographic workflows. Operating on the principle of positive displacement via roller compression of flexible tubing, the HL-2B delivers consistent flow without fluid contact with internal mechanical components—ensuring contamination-free operation and eliminating the need for valves or seals. Its design supports continuous, low-pulsation flow across two independent channels, making it suitable for applications requiring parallel sample handling, gradient elution support, or synchronized feeding into multi-stream detection systems. The pump is routinely integrated with UV/visible absorbance detectors (e.g., nucleic acid/protein analyzers), fraction collectors, and preparative liquid chromatography systems—particularly in biochemistry, molecular biology, and natural product isolation labs where solvent compatibility, sterility assurance, and trace-level reproducibility are critical.

Key Features

• Dual independent channels with fully synchronized or individually adjustable speed control (0–65 rpm), enabling simultaneous delivery of two reagents or parallel sample streams.
• Gold LED digital display with real-time rpm and directional status indication—optimized for visibility under standard lab lighting and hood illumination.
• High-torque stepper motor with microstepping drive electronics ensures smooth rotation, minimal flow pulsation, and high positional repeatability over extended operation cycles.
• Ergonomically angled 80° front panel improves operator accessibility and reduces repetitive strain during prolonged setup or monitoring tasks.
• Full-enclosure housing constructed from medical-grade ABS plastic—impact-resistant, chemically inert to common aqueous and organic solvents (e.g., ethanol, acetonitrile, PBS, Tris-HCl), and compliant with ISO 10993 biocompatibility screening requirements for non-invasive device housings.
• Standard TTL-level external control interface allows seamless synchronization with automated fraction collectors (e.g., FC-950, DBS-100) and programmable logic controllers for GLP-compliant method execution.

Sample Compatibility & Compliance

The HL-2B accommodates standard peristaltic tubing dimensions including 1.2×3 mm and 3×5 mm (ID×OD), compatible with platinum-cured silicone, Tygon® LFL-400, and PharMed® BPT formulations—each validated for USP Class VI and FDA 21 CFR 177.2600 compliance. Maximum operating pressure of 3 kg/cm² (≈294 kPa) supports use with moderate-backpressure chromatography columns (e.g., Sephadex G-25, DEAE-cellulose, C18 guard columns). While not certified for IEC 61010-1 safety marking, the unit meets general electrical safety expectations for Class I laboratory equipment operating within ambient temperature (10–40°C) and relative humidity (<80% RH, non-condensing) conditions. It is intended for research-use-only (RUO) applications and does not carry CE, UL, or UKCA certification.

Software & Data Management

The HL-2B operates as a standalone instrument with no embedded firmware-based data logging or PC connectivity. All operational parameters—including channel-specific rpm, direction, and runtime—are set and monitored locally via the front-panel keypad and LED display. For traceability in regulated environments, users may implement external recording via analog voltage output (0–5 V proportional to rpm) or digital pulse output (TTL square wave, 1 pulse per revolution). When integrated into chromatography systems compliant with 21 CFR Part 11, audit trails must be maintained externally—either through connected data acquisition software (e.g., LabChart, ChromaLink) or electronic lab notebook (ELN) entries documenting pump settings prior to each run.

Applications

• Continuous feed in gravity-fed or low-pressure column chromatography (e.g., gel filtration, ion exchange, affinity purification).
• Synchronized buffer delivery in dual-wavelength UV detection setups for real-time peak tracking and baseline correction.
• Controlled eluent introduction in open-column preparative separations of proteins, peptides, and plant extracts.
• Calibration fluid delivery in spectrophotometric assays requiring fixed-volume dosing over time.
• Cell culture media perfusion in small-scale bioreactor prototypes where sterility and shear-sensitive cell viability must be preserved.

FAQ

What tubing sizes are supported by the HL-2B?
The pump head accepts tubing with outer diameters of 3 mm and 5 mm, paired with inner diameters of 1.2 mm and 3 mm respectively—commonly used silicone or thermoplastic elastomer formulations.
Can the HL-2B operate in reverse mode?
Yes—the direction of rotation is fully reversible via front-panel control, enabling backflushing of lines or bidirectional fluid transfer in closed-loop configurations.
Is the HL-2B suitable for use with organic solvents?
When equipped with chemically resistant tubing (e.g., PharMed® BPT or Tygon® 2001), the HL-2B maintains integrity with alcohols, acetone, and chlorinated solvents; however, prolonged exposure to strong oxidizers (e.g., nitric acid) or halogenated hydrocarbons is not recommended.
Does the HL-2B include flow calibration functionality?
No—the device provides speed-based flow estimation only; actual volumetric delivery must be verified gravimetrically or volumetrically using calibrated cylinders and timed collection, especially when switching tubing types or viscosities.
How is the HL-2B powered and what safety protections are built in?
It operates on AC 220 V ±10%, 50/60 Hz input with internal thermal cutoff and motor stall protection; no battery backup or uninterruptible power supply (UPS) interface is provided.