Unimicro Technologies Easysep-1020 Binary High-Pressure Solvent Delivery Pump

Overview

The Unimicro Technologies Easysep-1020 is a precision-engineered binary high-pressure solvent delivery pump designed for integration into analytical-scale liquid chromatography systems—including HPLC, UHPLC-compatible configurations, and preparative LC workflows requiring stable gradient elution. It operates on the principle of positive displacement via dual reciprocating pistons driven by microstepping stepper motors, delivering consistent flow rates across a defined pressure and compositional range. The pump supports gradient formation through independent control of two solvent channels, enabling precise linear or stepwise mobile phase programming essential for method development, impurity profiling, and multi-analyte separation. Its architecture prioritizes mechanical longevity, pulse minimization, and operational reliability under continuous laboratory use—particularly in QC labs, pharmaceutical R&D environments, and academic analytical chemistry facilities where reproducibility and uptime are critical.

Key Features

• Floating plunger mounting mechanism ensures dynamic alignment between plunger rod and seal assembly, reducing eccentric wear and extending service life of both components beyond industry-standard benchmarks.
• Short-stroke plunger design actuated by low-inertia cam profile minimizes hydraulic pulsation—achieving flow ripple ≤ 0.2% RSD at 1 mL/min (measured per ISO 11607-2 methodology with calibrated flowmeter).
• Microprocessor-controlled microstepping driver circuitry enables smooth, low-noise motor operation with sub-millisecond timing resolution, eliminating cogging effects typical in conventional stepper-driven pumps.
• Embedded system-on-chip (SoC) controller supports daisy-chain communication via single RS-485 interface, allowing synchronized control of up to four Easysep-1020 units from one host workstation or chromatography data system (CDS).
• Real-time pressure monitoring with configurable overpressure cutoff (up to 45 MPa), automatic leak detection via flow deviation alarms, and hardware-level fault logging compliant with GLP audit trail requirements.

Sample Compatibility & Compliance

The Easysep-1020 is compatible with standard HPLC-grade solvents—including aqueous buffers, acetonitrile, methanol, tetrahydrofuran, and chlorinated organics—provided they meet ASTM D5398 purity specifications. It interfaces seamlessly with 1/16″ stainless steel or PEEK capillary tubing and common column hardware (e.g., 4.6 mm ID analytical columns, 2.1 mm ID narrow-bore configurations). All wetted materials conform to USP Class VI biocompatibility standards; fluidic path components are passivated per ASTM A967 for corrosion resistance. The pump meets CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and its firmware supports 21 CFR Part 11-compliant electronic signatures when deployed with validated CDS software.

Software & Data Management

Control is implemented via ASCII-based serial protocol over RS-485, fully documented in the manufacturer’s SDK for third-party integration (e.g., LabVIEW, Python pySerial, or custom LIMS middleware). Optional Unimicro ChromaLink™ software provides GUI-based method setup, real-time pressure/flow visualization, event-triggered data capture, and export to CSV or .CDF formats aligned with ASTM E1927-22 metadata conventions. Audit trails record all parameter changes, error events, and user logins with timestamp, IP address (for network-enabled variants), and digital signature—fully traceable for FDA inspection readiness.

Applications

• Method development and validation for pharmacopeial assays (USP , EP 2.2.46)
• Stability-indicating assays of biologics and small-molecule APIs under ICH Q5C/Q1A(R3) conditions
• Environmental analysis of polar pesticides and PFAS compounds using HILIC or mixed-mode columns
• Food safety testing for mycotoxins and veterinary drug residues per EU Regulation (EC) No 401/2006
• Academic research in polymer characterization via SEC/GPC with multi-angle light scattering coupling

FAQ

What is the maximum operating pressure of the Easysep-1020?
The pump is rated for continuous operation up to 45 MPa (6,525 psi) at ambient temperatures between 4 °C and 40 °C.
Does it support gradient delay volume compensation?
Yes—via firmware-configurable dwell volume offset (range: 0–500 µL) to correct for system dispersion prior to column inlet.
Can it be integrated with Agilent or Waters CDS platforms?
Native drivers are provided for OpenLab CDS and Empower 3; generic ASCII command set ensures compatibility with third-party controllers via RS-485 or optional USB-to-serial bridge.
Is preventive maintenance documentation available in English?
Yes—full bilingual (EN/CN) service manual, calibration procedure SOPs, and spare parts catalog are supplied with each unit and accessible via Unimicro’s secure customer portal.
What warranty coverage applies to the Easysep-1020?
Standard 24-month limited warranty covering parts and labor; extended service plans including on-site calibration and predictive maintenance analytics are available upon request.