Acmer LSP A/B Touchscreen Basic Laboratory Syringe Pump

Overview

The Acmer LSP A/B Touchscreen Basic Laboratory Syringe Pump is a micro-volume fluid delivery system engineered for precision, reliability, and operational flexibility in research and quality-controlled laboratory environments. Based on stepper motor-driven linear actuation and calibrated syringe displacement, the pump operates on volumetric displacement principle—translating motor step resolution into highly predictable fluid movement with minimal pulsation. Its design prioritizes stability under low-flow conditions (down to sub-nanoliter per minute), making it suitable for applications demanding high temporal and volumetric fidelity, including microfluidic chip priming, electrospinning precursor delivery, single-cell dosing, and controlled reagent infusion in bioreactor feed systems. The device complies with fundamental mechanical safety and electromagnetic compatibility requirements per GB/T 18268.1–2010 (IEC 61326-1 equivalent), and its control architecture supports integration into GLP-compliant workflows when paired with validated SOPs and audit-trail-enabled software.

Key Features

• 5-inch high-resolution capacitive touchscreen interface with intuitive icon-based navigation and real-time parameter visualization
• Built-in syringe library covering major global manufacturers (e.g., BD, Hamilton, SGE, Nanotemper) with preloaded inner diameter, stroke length, and volume data
• User-definable syringe geometry input for custom or non-standard barrels, enabling accurate flow calculation without physical recalibration
• Two-point volumetric calibration routine with persistent storage of correction factors per syringe ID
• Full parameter programmability: target volume, infusion/extraction rate, dwell time, cycle count, and inter-step interval—all storable in up to 10 user-defined protocols
• Real-time dynamic speed adjustment during active infusion without pausing or resetting the sequence
• Power-loss recovery: retains runtime state (position, direction, remaining volume, current rate) in non-volatile memory; resumes operation upon power restoration
• Intelligent flow boundary indication—displays instantaneous min/max achievable flow based on selected syringe and motor limits
• Adjustable push force setting (via step current modulation) to prevent syringe barrel deformation or plunger slippage across material types (glass, polypropylene, stainless steel)

Sample Compatibility & Compliance

The LSP A/B accommodates standard Luer-lock and Luer-slip syringes ranging from 1 µL to 140 mL capacity. Its mechanical coupling mechanism ensures secure engagement with syringe flanges meeting ISO 8536-4 and ISO 594-1 specifications. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, the pump’s deterministic behavior, traceable calibration capability, and protocol-based operation enable qualification under internal lab validation protocols (e.g., IQ/OQ/PQ). It is routinely deployed in academic labs and R&D centers conducting ASTM D3418 (viscosity standards), USP (dissolution apparatus auxiliary pumps), and ISO 15197-2 (in vitro diagnostic fluid handling)–aligned studies.

Software & Data Management

Communication is supported via RS485 (Modbus RTU protocol) or USB virtual COM port, with configurable slave address and baud rate (9600–115200 bps) directly adjustable through the touchscreen. No proprietary drivers are required for USB operation on Windows, macOS, or Linux platforms. Third-party control integration (e.g., LabVIEW, Python pySerial, MATLAB Instrument Control Toolbox) is fully supported. While the embedded firmware does not include built-in data logging, all status registers—including elapsed time, delivered volume, current flow rate, and error flags—are accessible in real time via serial query commands, facilitating external timestamped acquisition and CSV export for audit-ready records.

Applications

• Microfluidic device actuation and pressure-balanced flow control in organ-on-chip platforms
• Precise polymer solution metering in electrospinning setups requiring stable nanoliter-per-minute extrusion
• Controlled nutrient or inhibitor infusion in perfused 3D cell culture systems
• Calibration fluid delivery for optical particle sizers and capillary electrophoresis instruments
• Low-flow solvent gradient generation in preparative HPLC auxiliary modules
• Automated sample introduction in offline MALDI-TOF MS sample spotting workflows

FAQ

Does the LSP A/B support bidirectional fluid handling (infusion and withdrawal)?

Yes—the pump supports reversible motor direction, enabling both precise infusion and controlled aspiration with independent parameter sets for each phase.

Can multiple syringes be operated simultaneously on a single LSP A/B unit?

No—this is a single-channel syringe pump. For dual-syringe operation (e.g., push-pull configuration), two independent LSP A/B units synchronized via external TTL/RS485 triggering are recommended.

Is firmware upgrade available, and how is it performed?

Firmware updates are provided by Acmer as signed .bin files and installed via USB mass-storage mode; version history and release notes are documented in the technical support portal.

What safety mechanisms prevent over-pressurization or syringe breakage?

The pump monitors motor stall current and position deviation thresholds; if abnormal resistance is detected (e.g., clogged needle or jammed plunger), it halts motion and triggers an audible alert while preserving the last valid position.

Are CE or RoHS declarations available for this model?

CE marking is not affixed; however, RoHS-compliant material declarations and test reports for restricted substances (Pb, Cd, Hg, Cr⁶⁺, PBB, PBDE) are available upon request from Acmer’s compliance department.