iStir OH Elite Digital Overhead Stirrer Series
iStir OH Elite High-Torque Digital Overhead Stirrer Series
Heavy-duty laboratory mixing up to 100 litres, 100 Ncm and 70,000 mPa·s
The iStir OH Elite Series is designed for demanding laboratory, pilot-scale and industrial mixing applications involving larger volumes and high-viscosity materials. Three models provide capacities from 50 to 100 litres and torque ratings from 50 to 100 Ncm.
A powerful brushless DC motor, microprocessor control and intelligent load compensation provide dependable stirring as sample viscosity changes. Digital speed and timer control, reversible rotation and comprehensive safety protection make the Elite Series suitable for extended and challenging mixing processes.
The OH 100E provides up to 100 Ncm of torque and can process suitable materials with viscosities up to 70,000 mPa·s and volumes up to 100 litres.
Available Models
| Model | Capacity | Torque | Speed Range | Maximum Viscosity |
|---|---|---|---|---|
| iStir OH 50E | 50 litres | 50 Ncm | 60–2,000 RPM | 30,000 mPa·s |
| iStir OH 75E | Up to 75 litres | 75 Ncm | 60–2,000 RPM | 50,000 mPa·s |
| iStir OH 100E | 100 litres | 100 Ncm | 60–1,300 RPM | 70,000 mPa·s |
Key Features
- Three high-performance models with capacities up to 100 litres
- Maximum torque ratings from 50 to 100 Ncm
- Suitable for viscosities up to 70,000 mPa·s
- Powerful, quiet and maintenance-free brushless DC motor
- Microprocessor-controlled speed and timer settings
- Large digital display for easy monitoring
- Fine speed adjustment for accurate mixing control
- Clockwise and counter-clockwise rotation
- Timer from 1 minute to 99 hours and 59 minutes
- Continuous operating mode for extended processes
- Smart Control compensates for changing sample viscosity
- Power-interruption recovery mode
- Last-run memory for repeatable operation
- Overload, overcurrent and overtemperature protection
- IP42-rated stirrer head
- Push-through shaft design for flexible positioning
- Wide selection of interchangeable impellers available
Intelligent Control Under Changing Loads
Smart Control monitors the load applied to the motor and adjusts the drive to help maintain effective stirring as the viscosity of the sample changes. This is valuable during dissolving, polymerisation and formulation processes where the mixture may become progressively thicker.
The large digital display provides clear visibility of the selected speed, remaining time and operating functions, helping the operator monitor long or critical processes.
Reversible Mixing Direction
Clockwise and counter-clockwise rotation allows the direction of liquid flow to be changed during operation. Direction reversal can help redistribute settled material, disrupt persistent flow patterns and improve mixing uniformity throughout larger vessels.
Comprehensive Safety Protection
Built-in overload, overcurrent and overtemperature protection helps safeguard the motor and electronics during demanding operation. If excessive loading or an unsafe operating condition is detected, the protection system intervenes to prevent damage.
Typical Applications
- High-viscosity pharmaceutical and cosmetic formulations
- Creams, gels, lotions, pastes and emulsions
- Paints, coatings, inks and adhesives
- Polymer and resin development
- Chemical synthesis and process-development work
- Food and beverage research and formulation
- Pilot-scale and small-batch production
- Dissolving powders and solids into liquids
- Industrial research and quality-control laboratories
Common Technical Specifications
| Motor type | Brushless DC motor |
| Display | Large digital LED display |
| Timer | 1 minute to 99 hours 59 minutes, or continuous |
| Direction of rotation | Reversible clockwise/counter-clockwise |
| Chuck range | Approximately 1–10 mm, depending on selected chuck |
| Protection class | IP42 |
| Safety protection | Overload, overcurrent and overtemperature |
| Stirrer-head dimensions | Approximately 102 × 249 × 242 mm |
| Stirrer-head weight | Approximately 5.2 kg |
| Power supply | 100–240 V AC, 50/60 Hz via low-voltage adapter |
Configuration Required
The selected Elite stirrer head requires the following components to create a complete operating system:
- Stand: heavy-duty H-stand recommended for larger loads
- Boss-head clamp: selected to suit the chosen stand
- Chuck: keyed, keyless or collet chuck
- Impeller: selected according to viscosity, vessel and required flow pattern
The stand, boss-head clamp, chuck and impeller are not included with the stirrer head and must be selected and ordered separately.
Please provide Auckland Scientific with your vessel dimensions, batch volume, approximate viscosity and required mixing action. We can help select the correct Elite model, stand, chuck and impeller for your application.
Capacities are based on water or comparable liquids. Actual performance depends on the sample, vessel and impeller. Product images may show optional accessories that are not included. Specifications may be updated without notice.