KD Scientific KDS Legacy Series Programmable Syringe Pumps

Overview

The KD Scientific KDS Legacy Series represents a foundational line of precision programmable syringe pumps engineered for reliable, repeatable fluid delivery in research laboratories, pharmaceutical development, and analytical instrumentation integration. Operating on the principle of controlled linear actuation via microstepping stepper motors and high-resolution lead-screw mechanisms, these pumps convert digital flow or volume commands into precise mechanical displacement of syringe plungers. Unlike peristaltic or gear-based systems, syringe pumps deliver true constant-flow or constant-volume operation with minimal pulsation—critical for applications demanding nanoliter-level dosing accuracy, long-duration infusions, or multi-phase gradient delivery. The KDS Legacy platform supports single-, dual-, and multi-syringe configurations (up to 10 independent channels in modular setups), enabling both simple bolus injection and complex multi-step protocols across diverse experimental timelines.

Key Features

• Programmable flow rates spanning six orders of magnitude—from 0.001 µL/hr to 8,824 mL/hr—achieved through selectable syringe sizes (10 µL to 140 mL) and optimized motor control algorithms.
• High mechanical fidelity: ± <1% volumetric accuracy and ± 0.1% repeatability under standard operating conditions, validated per ISO 8536-4 and ASTM D3418 guidelines for fluid metering devices.
• Robust linear drive architecture delivering up to 18 kg maximum thrust, ensuring consistent performance with high-viscosity fluids (e.g., polymer solutions, cell suspensions, or silicone oils) and large-diameter syringes.
• RS-232 serial interface standard across all models, supporting bidirectional communication for remote command execution, real-time status polling, and event-triggered protocol synchronization with external controllers (e.g., PLCs, DAQ systems, or chromatography data systems).
• Dedicated firmware architecture enabling multi-step programs—including ramped flow transitions, timed pauses, conditional logic loops, and volume-triggered step advances—without requiring external scripting.
• Modular scalability: KDS 200/220/250 series support dual- or quad-syringe heads; system-level expansion accommodates up to 10 independently addressable syringes via daisy-chained controller units.

Sample Compatibility & Compliance

The KDS Legacy Series accommodates standard Luer-lock and Luer-slip syringes from major manufacturers (BD, Hamilton, SGE, Ito), including glass, polypropylene, and stainless-steel variants. Compatible with aqueous buffers, organic solvents (e.g., acetonitrile, DMSO), low-conductivity media, and sterile-filtered biological samples—provided chemical compatibility with pump housing materials (anodized aluminum, stainless-steel drive components, and fluoropolymer seals) is verified. All units are CE-marked and comply with IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emissions) standards. While not FDA-cleared as a medical device, the platform meets key requirements for GLP-compliant environments, including audit-trail-capable parameter logging (when integrated with compliant host software) and deterministic execution timing suitable for USP and ASTM E2656 method validation frameworks.

Software & Data Management

KD Scientific provides the legacy-compatible KDS Software Suite (v3.x), a Windows-based application supporting full instrument configuration, program creation, real-time monitoring, and CSV-exported run logs with timestamps, setpoints, actual flow rates, and error codes. The RS-232 interface enables integration with third-party platforms such as LabVIEW, MATLAB, Python (via PySerial), and EPICS—facilitating automated workflows in regulated settings. For GxP environments, users may implement 21 CFR Part 11-compliant electronic signatures and audit trails by deploying the pump within validated instrument control architectures that include secure user authentication, change-controlled firmware, and immutable log archiving.

Applications

• Chromatography sample introduction and mobile phase delivery in HPLC, UHPLC, and preparative LC systems.
• Controlled reagent addition in kinetic studies, enzyme assays, and calorimetry experiments.
• Cell culture perfusion, microfluidic device priming, and organ-on-chip medium exchange protocols.
• Calibration standard delivery for mass spectrometry, ICP-MS, and elemental analysis instrumentation.
• Long-term infusion studies in neuroscience (e.g., intracerebroventricular drug delivery) and pharmacokinetic modeling.
• Material science applications including hydrogel crosslinking initiation, nanoparticle synthesis, and sol-gel processing.

FAQ

What syringe sizes are supported across the KDS Legacy series?
Syringes ranging from 10 µL (e.g., Hamilton 10 µL gastight) to 140 mL (e.g., BD 140 mL plastic) are supported, with model-specific optimal ranges detailed in the KDS Technical Specifications Matrix.
Can the pump operate in closed-loop mode with external flow sensors?
No—the KDS Legacy series operates in open-loop mode only; flow verification requires external metrology (e.g., gravimetric collection or Coriolis sensor feedback) and is not natively supported by firmware.
Is firmware upgrade capability available?
Firmware updates are provided by KD Scientific upon request and require RS-232 connection and authorized service tools; no field-upgradable bootloader is embedded.
What is the warranty period and service support structure?
All KDS Legacy pumps carry a standard 2-year limited manufacturer warranty; extended service plans and global technical support are available directly through KD Scientific’s North American and EMEA service centers.
Are replacement syringe holders and drive modules available as spare parts?
Yes—KD Scientific maintains full backward-compatible spare parts inventory, including syringe clamps, lead screws, motor assemblies, and control boards, with documented disassembly procedures in the Service Manual Rev. D.