HL-4A Single-Channel Peristaltic Pump
| Origin | Shanghai, China |
|---|---|
| Manufacturer Type | Distributor |
| Regional Origin | Domestic (China) |
| Model | HL-4A |
| Price | USD 695 |
| Flow Rate | 0.12–24 L/h |
| Maximum Back Pressure | ≥2 kg/cm² (≈196 kPa) |
| Dimensions (Pump Head) | 240 × 280 × 170 mm |
| Operating Mode | Continuous or Timed Delivery |
| Drive Type | Brushless DC Motor with Analog/Manual Speed Control |
| Tubing Compatibility | Standard silicone or Tygon® tubing (ID 1.6–3.2 mm typical) |
| Certifications | CE-marked for laboratory use |
Overview
The HL-4A Single-Channel Peristaltic Pump is an industrial-grade, continuous-duty peristaltic pump engineered for reliable, contamination-free fluid transfer in analytical, environmental, and life science laboratories. Operating on the principle of positive displacement via roller compression of flexible tubing, it delivers precise volumetric flow without internal valves, seals, or wetted metal components—ensuring chemical compatibility across a broad range of solvents, slurries, and viscous media. Unlike centrifugal or diaphragm pumps, the HL-4A maintains consistent flow rate independent of back pressure fluctuations up to 196 kPa, making it suitable for applications requiring stable delivery against moderate resistance, such as inline filtration, column elution, or reagent dosing into closed-loop systems. Its robust brushless DC motor enables smooth, low-vibration operation over extended periods, while the modular design supports rapid tubing replacement and maintenance-free service intervals.
Key Features
- Single-channel configuration optimized for dedicated process lines or sequential multi-step workflows
- Wide adjustable flow range: 0.12–24 L/h, calibrated for reproducible performance across the full scale
- High-torque drive system capable of handling abrasive slurries and high-viscosity liquids (e.g., cell suspensions, polymer solutions, sediment-laden water)
- Front-panel analog speed control with real-time rotational feedback—no digital interface required, minimizing electromagnetic interference in sensitive instrumentation environments
- Compact yet rugged housing (240 × 280 × 170 mm) constructed from reinforced ABS with IP20-rated ingress protection for benchtop deployment
- Compliance with IEC 61010-1:2010 for electrical safety in laboratory equipment, including overcurrent and thermal shutdown safeguards
Sample Compatibility & Compliance
The HL-4A accommodates standard peristaltic tubing sizes (inner diameters 1.6 mm to 3.2 mm), supporting common elastomers including platinum-cured silicone (for biocompatibility and USP Class VI compliance), Tygon® LFL (for hydrocarbon resistance), and PharMed® BPT (for aggressive solvents). It is routinely deployed in EPA Method 300.0–compliant water quality analysis, ASTM D1129-22–aligned reagent delivery for titration systems, and ISO 17025-accredited calibration labs where traceability of flow performance is maintained through documented tubing batch validation. While not FDA 21 CFR Part 11–enabled by default, audit-ready operation is achievable when integrated with external PLC-based timing controllers that support electronic log generation and user access controls.
Software & Data Management
The HL-4A operates as a standalone analog instrument and does not include embedded firmware, network connectivity, or proprietary software. This architecture ensures deterministic response time and eliminates cybersecurity surface area—a key requirement in regulated QC/QA settings where deterministic hardware behavior is mandated over feature-rich but opaque digital control layers. For labs requiring data capture, third-party analog-to-digital acquisition modules (e.g., National Instruments USB-6009 or LabJack T7) can interface with the pump’s 0–5 V or 4–20 mA speed input/output signals to log RPM, cumulative volume, and runtime in CSV or TDMS formats. All operational parameters remain fully traceable under GLP-compliant electronic lab notebook (ELN) workflows when paired with timestamped external logging.
Applications
- Continuous-flow wastewater monitoring stations for nutrient or heavy metal analysis
- In-line sample introduction into ICP-OES, UV-Vis spectrophotometers, or ion chromatography systems
- Controlled feeding of culture media or inducers in microbial fermentation studies
- Automated leaching tests (e.g., TCLP, SPLP) requiring steady percolation rates through soil columns
- Reagent delivery in automated titrators or discrete analyzers where pulse-free flow is critical
- Low-shear transfer of shear-sensitive biological samples (e.g., whole blood, tissue homogenates) when paired with large-bore, low-compression tubing
FAQ
What tubing sizes are recommended for optimal flow accuracy at 24 L/h?
For maximum linearity and pressure stability at upper-range flow, use 3.2 mm ID platinum-cured silicone tubing with wall thickness ≥1.6 mm—validated per ISO 8536-4 for volumetric accuracy within ±3% of setpoint.
Can the HL-4A be integrated into a PLC-controlled process line?
Yes. It accepts standard 0–10 VDC analog speed commands and provides isolated tachometer output for closed-loop RPM verification—compatible with Siemens S7, Allen-Bradley CompactLogix, and Mitsubishi FX series controllers.
Is tubing lifetime data available under continuous operation?
At 60 rpm with 3.2 mm ID silicone tubing and 20% compression, mean time between failures exceeds 1,200 hours per tube set, based on accelerated aging tests per ASTM D573-20.
Does the pump meet requirements for ISO/IEC 17025 accreditation?
Yes—when operated with certified tubing batches and calibrated against gravimetric standards per ISO/IEC 17025 Clause 6.4, its measurement uncertainty budget supports accredited testing scope for volumetric flow verification.
What maintenance intervals are recommended for routine laboratory use?
Visual inspection every 200 operating hours; roller alignment check and tubing replacement every 500 hours or after 300 cycles of sterilization (autoclave or gamma), whichever occurs first.
