LongerPump L100-1E Dual-Channel Laboratory Peristaltic Pump

Overview

The LongerPump L100-1E is a dual-channel, microprocessor-controlled laboratory peristaltic pump engineered for precision fluid handling in analytical, biotechnological, and quality control environments. Based on the peristaltic principle—where rollers compress flexible tubing to generate positive displacement—the L100-1E delivers pulse-free, contamination-free flow without exposing fluids to internal pump components. Its design eliminates the need for valves, seals, or wetted metal parts, making it ideal for shear-sensitive, abrasive, or sterile applications including cell culture media transfer, reagent dosing in HPLC sample introduction, and continuous sampling in environmental monitoring systems. The pump’s compact footprint (197 × 110 × 91 mm) and low power consumption (15 W) support integration into fume hoods, glove boxes, and automated workstations while maintaining operational stability across ambient temperatures from 0 to 40 °C.

Key Features

• Dual independent channels with synchronized or asynchronous operation—enabling parallel delivery, recirculation, or gradient mixing without cross-contamination.
• Ultra-wide flow range of 0.0002–380 mL/min, achieved via precise speed control from 0.1 to 100 rpm with 0.1 rpm resolution—supporting both nanoliter-scale microfluidic priming and high-volume buffer exchange.
• Bidirectional rotation with instant direction reversal—critical for backflushing tubing, preventing clogging in particulate-laden samples, and enabling closed-loop calibration protocols.
• Robust aluminum alloy housing with corrosion-resistant epoxy-polyester coating—providing mechanical durability and compatibility with common lab solvents and disinfectants.
• Integrated power-loss memory function: automatically resumes pre-interruption speed, direction, and channel status upon power restoration—ensuring protocol continuity during transient outages.
• EMC performance compliant with IEC 61326-1 Class II requirements—minimizing electromagnetic interference in sensitive instrumentation setups such as mass spectrometry or electrophysiology rigs.

Sample Compatibility & Compliance

The L100-1E is compatible with standard silicone, Tygon®, PharMed® BPT, and Viton® tubing sizes ranging from 0.5 mm to 6.4 mm inner diameter, supporting flow optimization across viscosity ranges up to 10,000 mPa·s (with appropriate tube selection). It meets CE marking requirements when ordered with certified configuration (specify at time of purchase), and its electrical safety conforms to IEC 61010-1:2010 for laboratory equipment. While not inherently FDA 21 CFR Part 11 compliant, the pump supports integration into validated workflows through external audit-trail-capable SCADA or LIMS systems—facilitating GLP/GMP-aligned documentation for pharmaceutical QC labs and clinical research units.

Software & Data Management

The L100-1E operates as a standalone instrument with intuitive keypad navigation and real-time LED feedback. For system-level integration, optional RS485 communication (Modbus RTU protocol) enables remote parameter setting, status polling, and event logging via host PCs or PLCs. No proprietary software is required; standard industrial automation platforms—including LabVIEW, MATLAB Instrument Control Toolbox, and Python-based PySerial implementations—can interface directly with the pump’s serial command set. All operational parameters (speed, direction, run time, channel enable state) are logged locally in non-volatile memory for post-run verification, satisfying basic traceability needs in ISO/IEC 17025-accredited laboratories.

Applications

• Automated sample preparation for ICP-MS and AAS—delivering acid digestates or calibration standards with reproducible volumetric accuracy.
• Continuous perfusion in 3D bioreactors and organ-on-chip platforms—maintaining physiological shear stress profiles over extended durations.
• In-line dilution and standard addition in ion chromatography and capillary electrophoresis systems.
• Controlled reagent injection in enzymatic assays and kinetic ELISA protocols where timing and volume fidelity impact endpoint absorbance linearity.
• Low-flow solvent delivery in preparative chromatography fraction collectors and cold trap regeneration cycles.

FAQ

Is the L100-1E suitable for sterile applications?
Yes—when paired with gamma-irradiated, USP Class VI-certified tubing and operated in laminar flow cabinets, it maintains fluid path integrity without introducing microbial or particulate contaminants.
Can tubing wear be monitored programmatically?
No built-in wear sensor exists; however, consistent flow deviation beyond ±3% over time—detectable via gravimetric or conductivity-based external validation—signals tubing fatigue and recommends replacement.
Does the pump support analog input for speed modulation?
Not natively; speed is set digitally via keypad or Modbus register write. External 0–10 V or 4–20 mA control requires an optional analog-to-serial signal converter.
What is the maximum tubing pressure rating supported?
The pump generates up to 2.5 bar (36 psi) peak pressure depending on tube material, wall thickness, and roller compression geometry—always verify against manufacturer-specified burst pressures for selected tubing.
How often should calibration verification be performed?
We recommend quarterly volumetric verification using certified graduated cylinders or balance-based gravimetric methods under representative load conditions, per ISO 8655-3 guidance for piston-type liquid handling devices.