Laballiance Mighty Constant Flow Piston Pump
| Brand | Laballiance |
|---|---|
| Origin | USA |
| Model | Mighty |
| Drive Type | Stepper Motor |
| Pump Head | Single Plunger |
| Max Flow Rate | 5.00 mL/min |
| Max Pressure | 500 psi |
| Control Interface | Digital Keypad + RS-232 |
| Pump Type | Positive Displacement Constant Flow Pump |
Overview
The Laballiance Mighty Constant Flow Piston Pump is a precision-engineered, compact positive displacement pump designed for laboratory-scale liquid handling applications requiring high repeatability, stable flow delivery, and reliable low-volume dosing. Based on a single-plunger reciprocating mechanism driven by a high-resolution stepper motor, the Mighty pump operates on volumetric displacement principles—ensuring consistent flow rates independent of minor variations in fluid viscosity or backpressure within its operational envelope. Its architecture prioritizes mechanical simplicity, thermal stability, and long-term calibration integrity—making it suitable for integration into analytical workflows such as HPLC mobile phase delivery (as auxiliary or low-pressure gradient pump), reagent injection in automated assay systems, solvent addition in reaction monitoring setups, and controlled dosing in microfluidic interface modules. Unlike peristaltic or diaphragm-based alternatives, the plunger design eliminates pulsation-induced dispersion and provides inherently linear flow-to-step correlation, critical for quantitative dispensing where volumetric accuracy must be maintained across extended run times.
Key Features
- Single-plunger positive displacement mechanism delivering high volumetric accuracy and minimal flow deviation (typical CV < 0.5% at steady-state operation)
- Stepper motor actuation with microstepping control ensures precise positioning resolution and repeatable stroke volume execution
- Digital keypad interface enables direct parameter entry—including target flow rate (0.01–5.00 mL/min), run duration, and direction—without external software dependency
- RS-232 serial communication port supports bidirectional command exchange and real-time status reporting for integration into SCADA, LIMS, or custom automation frameworks
- Stainless steel wetted components (plunger, cylinder, check valves) provide chemical compatibility with common organic solvents, aqueous buffers, and mild acids/bases
- Robust pressure rating up to 500 psi (34.5 bar), enabling use in moderate-pressure pre-column or inline filtration configurations
- Compact footprint (120 × 85 × 160 mm) facilitates benchtop deployment or OEM integration into space-constrained instrumentation
Sample Compatibility & Compliance
The Mighty pump accommodates a wide range of Newtonian and mildly non-Newtonian liquids, including water, methanol, acetonitrile, phosphate-buffered saline (PBS), and diluted hydrochloric acid (≤1 M). It is not recommended for suspensions containing particles >5 µm or highly viscous fluids (>50 cP at operating temperature), which may compromise seal longevity or volumetric fidelity. The device complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets CE marking requirements for EMC (EN 61326-1) and low-voltage directive (2014/35/EU). While not certified for use in GMP-regulated final product manufacturing, its deterministic flow behavior, audit-ready parameter logging via RS-232, and traceable calibration methodology support GLP-aligned method development and QC testing under ISO/IEC 17025 frameworks.
Software & Data Management
No proprietary software is required for basic operation; all functions are accessible via front-panel controls. For automated environments, ASCII-based command protocols over RS-232 allow seamless interoperability with LabVIEW, Python (pySerial), MATLAB, or PLC-based controllers. Supported commands include flow rate setpoint adjustment, start/stop/pause execution, direction reversal, and real-time query of current flow, elapsed time, and error codes (e.g., “E03: Overpressure Detected”). All commands and responses adhere to fixed-length frame structures with CRC-8 checksum validation—ensuring data integrity during transmission. When integrated into validated systems, the pump’s deterministic behavior and command-response latency (<15 ms) enable compliance with FDA 21 CFR Part 11 requirements when paired with appropriate electronic record controls and user access management.
Applications
- HPLC system auxiliary pumping: mobile phase blending, post-column reagent addition, or derivatization stream delivery
- Automated titration and standard addition workflows requiring sub-mL precision dosing
- In-line dilution modules for ICP-MS or AAS sample introduction systems
- Controlled reagent injection in enzyme kinetics or stopped-flow spectroscopy platforms
- Calibration standard delivery in gravimetric or spectrophotometric verification procedures
- OEM integration into portable environmental analyzers for discrete water quality sampling and preservative dosing
FAQ
What is the minimum programmable flow rate?
The lowest configurable flow rate is 0.01 mL/min, achievable through fine-grained stepper motor step timing control.
Can the pump handle abrasive or particulate-laden solutions?
No—suspensions with particles exceeding 5 µm or abrasive slurries will accelerate wear of the sapphire-coated plunger seal and stainless steel cylinder bore.
Is firmware upgrade capability available?
Firmware updates are performed exclusively via RS-232 using Laballiance-provided utility tools; no field-upgradable bootloader is exposed to end users.
Does the pump support analog input for remote flow control?
No—only digital control via keypad or RS-232 is supported; 0–10 V or 4–20 mA analog interfaces are not implemented.
What maintenance intervals are recommended?
Plunger seals should be inspected every 500 hours of cumulative operation or annually—whichever occurs first—and replaced if scoring or leakage is observed.
