HNPM MZR-2505 High-Precision Micro-Dispensing Peristaltic Pump

Overview

The HNPM MZR-2505 is a high-precision, micro-dispensing peristaltic pump engineered for repeatable, low-volume fluid handling in demanding laboratory and industrial process environments. Unlike conventional peristaltic pumps relying on elastomeric tubing compression, the MZR-2505 employs a patented rotary micro annular gear displacement principle—combined with a brushless DC servo motor and integrated 16-bit microcontroller—to deliver true volumetric dosing with minimal pulsation and shear stress. This architecture enables accurate delivery across an exceptionally broad viscosity range (0.3–25,000 mPa·s), from aqueous buffers and solvents (e.g., methanol, water) to highly viscous media including adhesives, gels, lubricants, inks, and coatings. Its design eliminates reliance on tubing elasticity or lubrication, ensuring long-term stability and metrological traceability—critical for GLP-compliant calibration workflows, analytical sample introduction, and continuous process feeding under variable backpressure.

Key Features

• True volumetric displacement mechanism with 1.5 µL per revolution resolution and sub-microliter minimum dose (0.25 µL)
• High-precision performance: coefficient of variation (CV) <1% across full flow range—even at low flow rates (<10 µL/h) and elevated pressure differentials
• Robust wetted path constructed from corrosion-resistant SS 316L (1.4404/1.4435), tungsten carbide wear surfaces, and graphite-reinforced PTFE shaft seals
• Wide operational pressure envelope: 0–2.5 bar (water, 1 mPa·s) up to 0–15 bar (oil, 16 mPa·s); maximum inlet pressure rated at 5 bar (optionally up to 40 bar)
• Compact footprint (140 × 45 × 65 mm) and lightweight design (~780 g), suitable for integration into automated platforms, gloveboxes, or confined process lines
• DC servo motor (24 V, 44 W) with closed-loop speed control ensures stable rotational velocity from 1 to 6000 rpm—enabling fine-grained flow tuning without mechanical gear changes

Sample Compatibility & Compliance

The MZR-2505 accommodates diverse fluid chemistries without degradation of accuracy or seal integrity. Compatible media include polar solvents (methanol, acetone, acetonitrile), aqueous solutions, mineral and synthetic oils, silicone-based lubricants, UV-curable adhesives, epoxy resins, pigment dispersions, and non-Newtonian gels. All wetted materials conform to FDA-compliant and USP Class VI specifications where applicable. The pump meets ISO 8573-1 for compressed air–free operation and supports audit-ready documentation per 21 CFR Part 11 when paired with validated host software. It is routinely deployed in applications requiring adherence to ASTM D445 (kinematic viscosity), ISO 3104, and EN 12845 (fire suppression system component testing), particularly where precise metering of small-volume reagents or calibration standards is mandated.

Software & Data Management

The integrated 16-bit microcontroller provides real-time monitoring of motor current, rotational speed, and cumulative volume dispensed. Communication is supported via RS-232 or optional analog 0–10 V / 4–20 mA interfaces for PLC or SCADA integration. HNPM’s proprietary PumpControl Suite (Windows/Linux) enables protocol-driven batch dosing, multi-step flow profiles, event-triggered dispensing, and timestamped log export in CSV format. All operational parameters—including start/stop timestamps, dose volume, and error codes—are stored with immutable audit trails, satisfying GLP/GMP data integrity requirements. Firmware updates are performed over serial interface with cryptographic signature verification to ensure device authenticity and version control.

Applications

• Automated reagent dispensing in analytical chemistry workflows (e.g., ICP-MS sample introduction, titration systems)
• Precision metering of catalysts, crosslinkers, or initiators in polymer synthesis and R&D-scale reaction optimization
• Controlled delivery of functional fluids in vacuum deposition, spray coating, and inkjet printhead calibration
• Continuous feed of heat-transfer fluids or dielectric coolants in thermal management test rigs
• Dosing of pharmaceutical excipients and active ingredients during formulation development and stability studies
• Calibration of flow meters and mass spectrometry interfaces using certified reference solutions

FAQ

What is the minimum measurable dose achievable with the MZR-2505?
The pump achieves a minimum discrete dose of 0.25 µL, enabled by its 1.5 µL/rev displacement geometry and high-resolution motor control.
Can the MZR-2505 handle abrasive or particulate-laden fluids?
Yes—tungsten carbide gearing and hardened SS 316L components provide resistance to abrasion; however, suspended solids >50 µm require inline filtration to prevent seal wear.
Is the pump compatible with vacuum-side suction applications?
It operates effectively under inlet vacuum conditions up to −0.8 bar (absolute), provided fluid vapor pressure remains below operating temperature limits.
How is calibration traceability maintained?
HNPM provides factory calibration certificates traceable to PTB (Physikalisch-Technische Bundesanstalt) standards; users may perform in-house verification using gravimetric or timed-collection methods per ISO/IEC 17025 guidelines.
Are custom fluid path configurations available?
Yes—HNPM offers OEM engineering support for specialized inlet/outlet manifolds, heated or cooled housings, explosion-proof enclosures (ATEX Zone 2), and material substitutions (e.g., Hastelloy C-276 for aggressive halogenated solvents).