Sanotac SPK0520 PEEK High-Pressure Constant Flow Pump

Overview

The Sanotac SPK0520 PEEK High-Pressure Constant Flow Pump is an engineered solution for precise, pulse-minimized fluid delivery in demanding laboratory and pilot-scale applications. Based on positive displacement reciprocating plunger technology with dual-symmetric drive architecture, the pump operates on a cam-driven, floating-piston principle—ensuring mechanical stability under sustained pressure loads up to 20 MPa. Its core design targets applications requiring chemical inertness, biological compatibility, and long-term flow reproducibility: including preparative and analytical liquid chromatography (HPLC, UHPLC, SFC), catalyst dosing in batch reactors, supercritical CO₂ delivery, electrolyte feeding in battery R&D, and controlled reagent infusion in continuous-flow synthesis systems. Unlike stainless-steel or titanium alternatives, the all-PEEK wetted path eliminates metal ion leaching, rendering it suitable for sensitive biomolecules, nucleic acid formulations, and cell culture media handling where extractables must be minimized.

Key Features

• PEEK-only fluidic path: Pump head, check valves, seals, and tubing interfaces are constructed entirely from medical-grade PEEK (ISO 10993-compliant), offering exceptional resistance to acids, bases, halogenated solvents, and oxidizers—while maintaining structural integrity at temperatures up to 250 °C.
• Microprocessor-controlled dual-piston synchronization: Real-time solvent compressibility compensation and multi-point volumetric calibration (performed across 5 flow decades) enable ≤±0.15% RSD flow accuracy from 0.01 mL/min to 10 mL/min (at 20 MPa).
• Low-pressure pulsation architecture: Cam profile optimization combined with active electronic flow ripple suppression reduces pressure fluctuation to <0.25% of set pressure—critical for baseline stability in UV/Vis detection and mass spectrometry coupling.
• Modular gradient capability: Supports isocratic, linear, step, and user-defined non-linear gradient profiles via internal firmware; gradient delay volume <120 µL (measured at 1 mL/min, 10 µL injection).
• Durability-focused mechanical design: Floating plunger mechanism minimizes seal shear stress; ceramic-coated camshaft and Swiss-sourced PEEK-faced check valves ensure >10,000 hours MTBF under continuous operation.
• Open communication protocol: RS-232 and optional Ethernet interface support ASCII-based command sets compliant with ANSI/IEEE 488.2; fully integrable with third-party CDS platforms (e.g., Chromeleon, Empower, OpenLab) without proprietary drivers.

Sample Compatibility & Compliance

The SPK0520 accommodates aqueous buffers, organic solvents (acetonitrile, methanol, THF), ionic liquids, supercritical fluids (CO₂, N₂O), and viscous polymer solutions (up to 500 cP at 25 °C). Its PEEK construction meets ISO 10993-5 cytotoxicity screening requirements and demonstrates negligible leachables per USP when tested with 50% ethanol/water extraction. While not certified for IVD or clinical use, the pump is routinely deployed in GxP-aligned laboratories where instrument qualification follows IQ/OQ/PQ protocols per ASTM E2500 and EU Annex 11. Traceable calibration certificates (NIST-traceable flow standards) are available upon request.

Software & Data Management

Local operation is managed via a 4.3-inch capacitive touchscreen with 10 programmable method slots—each storing flow rate, pressure limit, gradient table, and auto-purge parameters. Remote control supports time-stamped audit trails with user authentication (role-based access), electronic signatures, and 21 CFR Part 11–compliant data export (CSV, PDF, XML). Firmware updates are delivered via signed .bin files with SHA-256 verification; configuration backups retain full method history with timestamped version control.

Applications

• Preparative HPLC purification of monoclonal antibodies and ADC intermediates
• Controlled co-injection of catalysts and monomers in polyolefin slurry reactors
• Supercritical fluid chromatography (SFC) method development for chiral separations
• Electrolyte metering in solid-state battery half-cell testing rigs
• In-line dilution and standard addition in ICP-MS sample introduction systems
• Continuous hydrothermal synthesis of metal oxide nanoparticles

FAQ

What is the maximum operating temperature for the PEEK fluid path?
The wetted components maintain mechanical performance up to 250 °C; however, continuous operation above 120 °C requires thermal shielding and reduced pressure rating per ASME B31.3 derating guidelines.
Can the SPK0520 be used with aggressive fluorinated solvents like HFIP or TFEE?
Yes—PEEK exhibits excellent resistance to hexafluoroisopropanol (HFIP), trifluoroethanol (TFE), and bis(trifluoroethyl) ether; no swelling or loss of tensile strength observed after 72 h immersion at 25 °C.
Is gradient mixing performed onboard or externally?
The SPK0520 is a single-channel high-pressure pump; gradient formation requires external low-pressure mixing (e.g., with a Sanotac SMG series mixer) or integration into a dual-pump binary/quaternary system.
Does the pump support automatic leak detection or pressure fault recovery?
It features real-time pressure deviation monitoring with configurable alarm thresholds and automatic shutdown at ±5% pressure error sustained for >3 s; no self-diagnostic leak localization is implemented.
What validation documentation is supplied with the instrument?
Factory test report (flow accuracy, pressure linearity, pulse amplitude), material compliance summary (RoHS, REACH), and CE Declaration of Conformity are included; full 21 CFR Part 11 validation packages are available as optional service engagement.