Elite P1100 Series High-Pressure Isocratic Pump

Overview

The Elite P1100 Series High-Pressure Isocratic Pump is a precision-engineered solvent delivery module designed for integration into high-performance liquid chromatography (HPLC) systems. Operating on the principle of positive displacement via dual-piston serial pumping architecture, the P1100 delivers stable, pulse-minimized flow across its full operational range — critical for baseline stability and quantitative reproducibility in analytical and preparative separations. As an isocratic pump, it maintains a constant mobile phase composition during runtime, making it suitable for routine QC assays, method development, and educational applications where gradient complexity is unnecessary. Its robust mechanical design, thermally managed stepper motor drive, and modular interface enable seamless interoperability with third-party HPLC detectors (e.g., UV-Vis, fluorescence), autosamplers, column ovens, and data acquisition systems compliant with industry-standard analog or digital I/O protocols.

Key Features

• Dual-piston serial pump head engineered to suppress pulsation below detectable levels in pressure-sensitive detection configurations.
• High-resolution flow control with 0.001 mL/min setting increment and verified accuracy ≤ ±0.3% across the entire 0.001–10.000 mL/min range.
• Exceptional short-term and long-term flow stability: RSD ≤ 0.1% under constant-load conditions at typical analytical flow rates (e.g., 1.0 mL/min, 25 MPa).
• Dedicated front-panel keys for rapid maximum pressure limit setting and A/B pump channel selection — optimized for multi-pump system expansion or solvent switching workflows.
• Thermally regulated stepper motor with passive heat dissipation architecture, ensuring consistent torque output and positional repeatability over extended operation (>12 h continuous duty).
• Compact footprint (420 × 260 × 160 mm) and lightweight chassis (12 kg) facilitate benchtop integration in space-constrained laboratories or mobile analytical platforms.

Sample Compatibility & Compliance

The P1100 supports common HPLC-compatible solvents including water, methanol, acetonitrile, tetrahydrofuran, and dilute aqueous buffers (pH 2–8). It is compatible with stainless steel, PEEK, and titanium wetted-path components found in standard analytical columns (2.1–4.6 mm ID) and guard cartridges. While not certified for GMP-regulated production environments out-of-the-box, the pump’s deterministic flow behavior, pressure monitoring capability, and hardware-level parameter locking support alignment with GLP documentation requirements. When integrated with validated chromatography data systems (CDS), it can contribute to audit trails satisfying FDA 21 CFR Part 11 criteria for electronic records — contingent upon full system-level validation by the end user.

Software & Data Management

The P1100 operates in standalone mode via its embedded keypad and LCD interface, requiring no host PC for basic function execution. For automated system control, it provides RS-232 and optional USB-to-serial interfaces supporting ASCII command protocols compatible with open-source and commercial CDS platforms (e.g., OpenLab CDS, Chromeleon, Empower). All operational parameters — flow rate, pressure limit, run time, and status flags — are accessible in real time and loggable for post-run analysis. Firmware updates are performed via serial connection using Elite-provided utilities; version history and calibration logs are retained internally for traceability.

Applications

• Routine quality control testing of pharmaceutical actives and excipients per USP and EP 2.2.46 guidelines.
• Environmental analysis of pesticides and PAHs in soil/water extracts using EPA Method 8330B-compliant isocratic methods.
• Food safety screening for preservatives (e.g., benzoic acid, sorbic acid) and artificial colors in beverages and sauces.
• Academic teaching labs conducting fundamental HPLC theory demonstrations, retention time studies, and column efficiency evaluations.
• Preparative-scale fraction collection where precise, uninterrupted solvent delivery is required for downstream crystallization or lyophilization.

FAQ

Is the P1100 compatible with gradient elution systems?
No — the P1100 is an isocratic pump and does not include proportioning valves or multi-solvent mixing capability. Gradient functionality requires pairing with a dedicated quaternary or binary gradient module.
What maintenance intervals are recommended for the pump seals and check valves?
Elite recommends inspecting inlet/outlet check valves and piston seal integrity every 500 hours of operation or semiannually, whichever occurs first, using manufacturer-supplied replacement kits (P/N EL-P1100-SEAL-KIT).
Does the P1100 support remote start/stop via TTL or dry-contact signals?
Not natively — external triggering requires interfacing through its RS-232 command set or optional digital I/O expansion module (sold separately).
Can the pump be operated continuously at its maximum pressure rating of 42 MPa?
Yes, but sustained operation above 35 MPa is advised only with low-viscosity solvents and temperature-controlled environments to minimize thermal drift and seal wear.
Is firmware upgrade documentation available in English?
Yes — Elite provides bilingual (Chinese/English) firmware release notes, installation guides, and command reference manuals via secure customer portal access upon product registration.