Sanotac QS-0502 High-Precision PTFE-Lined High-Pressure Constant Flow Pump

Overview

The Sanotac QS-0502 is a high-precision, corrosion-resistant constant flow pump engineered for demanding analytical and preparative applications requiring reliable delivery of aggressive acidic media under elevated pressure. Based on dual-driven parallel plunger architecture with microprocessor-based solvent compressibility compensation and multi-point flow calibration, the pump delivers stable, low-pulse fluid transport across a wide dynamic range (0.1–50.0 mL/min) at pressures up to 2 MPa. Its measurement principle relies on precision mechanical displacement combined with real-time electronic pulse suppression—leveraging cam-profile optimization and active flow feedback—to achieve trace-level reproducibility in continuous or gradient elution protocols. Designed specifically for compatibility with highly corrosive reagents—including aqua regia, concentrated H₂SO₄, HNO₃, HCl, HF, HClO₄, HMnO₄, HI, and HBr—the QS-0502 meets stringent operational requirements in hyphenated techniques such as ion chromatography, acid digestion systems, electrochemical synthesis, and in-line sample pretreatment modules.

Key Features

• PTFE-lined fluid path with sapphire check valves and zirconia ceramic plungers—ensuring long-term chemical inertness against all common mineral acids and oxidizing agents
• Floating plunger design minimizes seal wear and extends service life of high-pressure sealing components
• Integrated cam-curve compensation and electronic flow pulsation suppression reduce pressure ripple to ≤0.1 MPa (RMS), critical for baseline stability in sensitive detection systems
• Microprocessor-controlled dual-pump-head synchronization enables seamless gradient formation via programmable combinations of isocratic, linear, and step profiles
• Ten onboard user-defined methods support rapid method recall and parameter locking for GLP-compliant workflows
• Open communication protocol (RS232/USB) allows full integration with third-party chromatography data systems (CDS) and custom LabVIEW or Python-based control environments

Sample Compatibility & Compliance

The QS-0502 is validated for continuous operation with aqueous and organic-acidic mobile phases commonly used in environmental analysis (e.g., EPA Method 300.0 for anion determination), nuclear fuel cycle chemistry, semiconductor wet etching process development, and geochemical leaching studies. All wetted materials comply with ISO 10993-5 biocompatibility guidelines for non-cytotoxicity and are certified free of extractables per USP . The pump architecture supports audit-ready operation under FDA 21 CFR Part 11 when paired with compliant CDS software, providing electronic signature capability, user access levels, and full audit trail logging for flow rate, pressure, and gradient program execution.

Software & Data Management

Local operation is managed via an intuitive backlit LCD interface with tactile keypad navigation. For automated environments, the pump supports ASCII-based command sets over standard serial or USB virtual COM port—enabling script-driven method sequencing, real-time status polling (flow, pressure, error codes), and event-triggered actions. Data output includes timestamped flow/pressure logs in CSV format, compatible with LIMS integration. Firmware updates are performed via secure signed binary upload, preserving configuration integrity during version transitions. Optional OEM SDK provides documented API libraries for MATLAB, Python (PySerial), and .NET frameworks.

Applications

• Acid-resistant HPLC and IC mobile phase delivery for trace metal speciation (e.g., As, Cr, Se species separation)
• Automated sample digestion systems in ICP-MS and ICP-OES laboratories handling HF-based matrices
• Continuous-flow synthesis reactors requiring precise stoichiometric addition of corrosive reagents
• In-line pH adjustment and chelant dosing in wastewater treatment pilot studies
• Calibration standard delivery in reference material certification programs (ISO/IEC 17025 accredited labs)
• High-temperature/pressure hydrothermal reaction feed systems where stainless steel would corrode

FAQ

What acids can the QS-0502 safely deliver at full pressure?
The pump is fully compatible with concentrated sulfuric acid (≤98%), nitric acid (≤70%), hydrochloric acid (≤37%), hydrofluoric acid (≤49%), perchloric acid (≤72%), and aqua regia—provided temperature remains below 60°C and system backpressure does not exceed 2 MPa.
Is the pump suitable for GMP-regulated pharmaceutical QC labs?
Yes—when operated with validated CDS software supporting 21 CFR Part 11 compliance, the QS-0502 satisfies instrument qualification requirements for Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ) documentation.
Can it be integrated into existing chromatography systems from Agilent, Waters, or Shimadzu?
Absolutely—the open-command protocol enables native integration without proprietary drivers; example scripts and handshake protocols are provided in the technical documentation package.
What maintenance intervals are recommended for optimal longevity?
Plunger seals and check valves should be inspected every 500 hours of operation under acidic conditions; PTFE pump heads require replacement only after visible erosion or flow deviation exceeding ±1.5% (typically >2000 hours with proper filtration).