Heidolph Multi Reax Vortex Mixer
| Brand | Heidolph |
|---|---|
| Origin | Germany |
| Model | Multi Reax |
| Speed Range | 150–2000 rpm |
| Operating Modes | Continuous & Timer (1–999 min) |
| Vibration Type | Orbital Vortex |
| Amplitude | 3 mm |
| Display | LED Digital Speed Display |
| Housing Material | Anodized Aluminum Alloy |
| Max Load Capacity | 1.5 kg |
| IP Rating | IP30 |
| Standard Accessories | 12-position rack (for 16–32 mm tubes) & 26-position rack (for 10–16 mm tubes) |
| Input Power | 50 W |
| Sample Compatibility | Up to 26 × 10–16 mm or 12 × 16–32 mm test tubes simultaneously |
Overview
The Heidolph Multi Reax Vortex Mixer is a precision-engineered orbital vortex shaker designed for high-throughput, reproducible mixing of liquid samples in standard laboratory tubes. Based on controlled eccentric orbital motion—distinct from linear shaking or magnetic stirring—the Multi Reax generates consistent vortex formation across multiple tubes simultaneously, ensuring uniform suspension, homogenization, and reagent resuspension without foaming or splashing under optimized conditions. Its robust anodized aluminum housing, low center-of-gravity mechanical architecture, and balanced drive system enable stable operation at speeds up to 2000 rpm, even with asymmetric or partially filled tube arrays. Designed and manufactured in Germany, the instrument complies with IEC 61010-1 safety standards for laboratory electrical equipment and meets CE marking requirements for electromagnetic compatibility (EMC) and low-voltage directive conformity.
Key Features
- Simultaneous processing of up to 26 tubes (10–16 mm diameter) or 12 tubes (16–32 mm diameter) using interchangeable, tool-free racks—eliminating manual repositioning between sample sets.
- Digitally controlled speed regulation (150–2000 rpm) with real-time LED display ensures precise repeatability across experiments and operators.
- Programmable timer function (1–999 minutes) supports unattended operation while maintaining full compliance with GLP documentation requirements when paired with external audit logs.
- Low-profile chassis and weighted base minimize lateral displacement during high-speed vortexing—critical for benchtop stability in shared lab environments.
- Energy-efficient 50 W brushless motor delivers sustained torque without thermal derating, supporting continuous-duty cycles over extended periods.
- IP30-rated enclosure provides protection against solid objects ≥2.5 mm—suitable for standard dry laboratory environments but not recommended for wet or corrosive fume hood applications.
Sample Compatibility & Compliance
The Multi Reax accommodates common borosilicate glass and polypropylene centrifuge tubes, PCR strips, and conical-bottom microcentrifuge tubes within defined dimensional ranges. Tube racks are mechanically keyed to prevent misalignment and ensure uniform energy transfer. While the device itself does not carry ISO/IEC 17025 calibration certification, its speed accuracy (±2% of setpoint, typical) and timing resolution (±1 s) align with routine QC verification protocols outlined in ASTM E2918 and USP . The unit is compatible with regulated workflows requiring traceable operational parameters; when integrated into validated systems, it supports 21 CFR Part 11-compliant data capture via optional RS-232 or analog output interfaces (sold separately).
Software & Data Management
The Multi Reax operates as a standalone instrument with no embedded firmware-based software. All control logic resides in hardware-level microcontroller circuitry, minimizing failure points and eliminating cybersecurity vulnerabilities associated with networked devices. For laboratories implementing electronic lab notebooks (ELNs) or LIMS integration, third-party serial communication modules enable logging of speed, duration, and start/stop timestamps into centralized databases. Audit trails generated externally satisfy FDA and EMA expectations for equipment usage records under GxP frameworks—provided that timestamp synchronization, user authentication, and change control procedures are maintained per organizational SOPs.
Applications
- Routine resuspension of lyophilized reagents, bacterial pellets, and protein precipitates prior to downstream analysis (e.g., HPLC, ELISA, qPCR).
- Homogenization of immunoassay standards and calibrators to ensure inter-batch consistency in clinical diagnostics labs.
- Pre-analytical sample preparation for environmental testing—including soil extract agitation and waterborne pathogen concentration steps.
- Cell culture maintenance tasks such as gentle dissociation of adherent monolayers and media component blending prior to sterile filtration.
- QC/QA batch release testing where mixing time and intensity must be strictly replicated across production lots.
FAQ
Is the Multi Reax suitable for use with sealed tubes containing volatile solvents?
Yes—provided tube caps are fully tightened and materials are chemically compatible with the solvent. However, prolonged vortexing of highly volatile compounds may generate pressure buildup; vented caps or periodic pressure release is recommended.
Can the timer be overridden during operation?
Yes—the timer can be disabled at any point to switch to continuous mode without interrupting motion. The display updates in real time to reflect the active operating state.
Does Heidolph provide factory calibration certificates?
No—calibration is performed per internal quality control procedures at time of manufacture. Users are advised to perform periodic verification using NIST-traceable tachometers and stopwatch measurements per their site’s metrology policy.
Are replacement racks available for non-standard tube formats?
Yes—custom machined adapters (e.g., for 5 mL round-bottom tubes or 96-well plate carriers) are available through authorized Heidolph distributors upon request and technical review.
What maintenance is required for long-term reliability?
Annual inspection of motor coupling integrity and rack mounting screws is recommended. No lubrication or consumable parts are required under normal operating conditions.
