Hanuo JJ-100W Electric Stirrer

Overview

The Hanuo JJ-100W Electric Stirrer is an engineered solution for precise, reproducible mixing of low- to high-viscosity liquid samples in academic, industrial, and regulatory-compliant laboratory environments. Utilizing a brushless DC motor architecture, it delivers consistent torque output across its full 0–3000 rpm speed range—enabling stable agitation of volumes up to 10 L without stalling or thermal drift. Unlike brushed motor stirrers, the absence of carbon brushes eliminates sparking hazards and extends operational lifetime under continuous duty cycles. Its core function relies on rotational shear transfer via a vertically mounted stainless steel shaft and interchangeable impellers, making it suitable for applications requiring uniform dispersion, dissolution, homogenization, or suspension maintenance—notably where batch-to-batch consistency and operator safety are critical.

Key Features

• Brushless DC motor (100 W nominal power) with high-efficiency electromagnetic design, delivering 0.7 N·m constant torque and enabling reliable operation at both low-speed gentle mixing and high-shear dispersion.
• Digital RPM display with ±1% reading accuracy provides real-time feedback for method documentation and SOP adherence.
• 0–120 minute mechanical timer supports unattended operation while maintaining compliance with GLP-aligned workflow protocols.
• Stainless steel (AISI 304) stirring rod and blade assembly ensures long-term resistance to corrosion from aqueous, acidic, alkaline, and organic solvent-based media.
• Stepless electronic speed control allows fine-grained adjustment across the entire 0–3000 rpm range, supporting viscosity-dependent optimization without gear shifting or mechanical wear.
• Compact benchtop footprint (220 × 180 × 450 mm) and integrated base design ensure stability during high-torque operation, minimizing vibration transmission to adjacent instrumentation.

Sample Compatibility & Compliance

The JJ-100W accommodates a broad spectrum of sample types—including aqueous buffers, polymer solutions, colloidal suspensions, emulsions, and viscous reagent mixtures—with validated performance up to 100,000 mPa·s. It meets IEC 61010-1 safety requirements for laboratory electrical equipment and carries CE marking for use within the European Economic Area. While not intrinsically rated for explosive atmospheres (ATEX), its spark-free motor design makes it appropriate for general-purpose chemical handling under standard fume hood conditions. The unit complies with ISO/IEC 17025 documentation expectations when used within accredited testing laboratories, particularly where mixing parameters (speed, duration, temperature stability of sample) must be recorded as part of test method validation.

Software & Data Management

This model operates as a standalone analog-controlled instrument and does not incorporate embedded firmware, USB connectivity, or PC interface capabilities. All operational parameters—including speed setpoint and timer activation—are configured manually via front-panel dials and switches. For laboratories requiring audit-ready records, users may integrate external digital logging systems (e.g., USB data loggers connected to tachometer outputs) or document settings manually within electronic lab notebooks (ELNs) compliant with 21 CFR Part 11 requirements. No proprietary software or cloud platform dependency is introduced—ensuring compatibility with air-gapped or IT-restricted environments common in pharmaceutical QC and defense-related R&D facilities.

Applications

• Preparation of calibration standards and reference solutions in analytical chemistry labs (e.g., HPLC mobile phase blending, titrant homogenization).
• Cell culture media conditioning and buffer equilibration in life science and biotechnology workflows.
• Suspension stabilization during particle size analysis sample prep (e.g., prior to laser diffraction or dynamic light scattering measurements).
• Reaction mixture homogenization in synthetic organic chemistry and catalysis studies, especially under reflux or inert atmosphere conditions.
• Quality control testing of industrial fluids—including paints, coatings, adhesives, and food-grade emulsions—per ASTM D1849, ISO 7504, or USP <701> standards.
• Teaching laboratory demonstrations of fluid dynamics, Newtonian/non-Newtonian behavior, and mass transfer kinetics at undergraduate and graduate levels.

FAQ

Is the JJ-100W compatible with glass reactor vessels up to 10 L capacity?
Yes—when paired with appropriately sized PTFE-coated or glass-coated stir bars and supported by a stable clamp stand, the unit maintains mechanical integrity and torque delivery in cylindrical or jacketed reactors meeting standard DIN/ISO neck dimensions.
Does it support external speed control via 0–10 V or 4–20 mA signal input?
No—the JJ-100W features only manual local control and lacks analog/digital input interfaces for remote automation integration.
What is the maximum ambient operating temperature and humidity range?
Rated for continuous operation at 5–40 °C and ≤80% relative humidity (non-condensing), per IEC 61010-1 environmental classification.
Can the stirring shaft be replaced with custom geometries (e.g., anchor, paddle, or turbine impellers)?
Yes—the 10 mm diameter keyed shaft accepts industry-standard ISO 228–1 threaded attachments, allowing interchangeability with third-party impeller sets designed for laboratory-scale mixing.
Is calibration certification available for traceable speed verification?
Hanuo provides factory calibration reports upon request; users may perform in-house verification using NIST-traceable handheld tachometers compliant with ISO/IEC 17025 metrological requirements.