1. Overview
This high pressure constant flow pump is a high‑performance fluid delivery module designed for modern liquid chromatography. Thanks to its precision micro‑volume tandem dual‑plunger drive and closed‑loop control, it maintains excellent flow repeatability and accuracy over long‑term operation – an ideal choice for analytical HPLC, ion chromatography, and general laboratory pumping applications.
2. Key Features
Micro‑volume tandem dual‑plunger design
Minimizes flow pulsation, improves baseline stability, and reduces maintenance frequency.
High flow resolution
Flow range 0.001 – 10.000 mL/min in 0.001 mL/min increments, enabling precise low‑flow gradient methods.
Excellent flow precision & accuracy
Precision: ≤0.1% RSD
Accuracy: <±1% at 2 μL/min – verified for reliable microliter‑per‑minute delivery.
Wide pressure capability
Maximum output pressure: 6000 psi (~42 MPa) – compatible with most analytical columns and some sub‑2 μm particle columns.
Automatic compressibility compensation
Automatically adjusts plunger stroke based on the compressibility of the mobile phase, ensuring accurate flow regardless of solvent type.
Comprehensive safety & protection
Power‑on self‑test (POST)
User‑adjustable high/low pressure alarms with pump shutdown on trigger
Overpressure protection, optional leak detection
Motor overload protection
Compact and lightweight
Dimensions: W260×H170×D360 mm | Weight: 6.3 kg – saves bench space and facilitates multi‑module stacking or portable use.
3. Technical Specifications
| Parameter | Specification |
| Pump type | Micro‑volume tandem dual‑plunger |
| Flow rate range | 0.001 – 10.000 mL/min, 0.001 mL/min increments |
| Flow precision | 0.1% RSD |
| Flow accuracy | <±1% (at 2 μL/min) |
| Maximum pressure | 6000 psi (~42 MPa) |
| Compressibility compensation | Automatic |
| Safety features | Power‑on self‑test, high/low pressure alarms, overpressure protection, motor protection |
| Dimensions (W×H×D) | 260 × 170 × 360 mm |
| Weight | 6.3 kg |
Applications:
Analytical HPLC systems – isocratic or low‑pressure gradient
Micro‑flow / capillary LC
Ion chromatography (IC) pump module
Gel permeation chromatography (GPC)
Laboratory column chromatography / flash purification
Precision fluid delivery in pharmaceutical, chemical, food & environmental testing laboratories
