iStir OH Jr. Compact Analog Overhead Stirrer – Complete Kit
£475.00
Sale price
£475.00
Regular price
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iStir OH Jr. Compact Analog Overhead Stirrer – Complete Kit
£475.00
Sale price
£475.00
Regular price
iStir OH Jr. Compact Analog Overhead Stirrer
Complete laboratory stirring kit for volumes up to 10 litres and viscosities up to 1,000 mPa·s
The iStir OH Jr. is a compact and dependable overhead stirrer designed for routine laboratory mixing of liquids with viscosities up to 1,000 mPa·s and volumes up to 10 litres.
Its maintenance-free brushless DC motor provides quiet operation, strong torque and consistent performance across a broad speed range. Unlike a magnetic stirrer, the directly driven impeller provides reliable mixing where stronger circulation or positive mechanical agitation is required.
Ready-to-use complete kit
Supplied with a plate stand, boss-head clamp and stainless-steel cross-blade impeller, providing the main components required to assemble a complete laboratory mixing station.
Supplied with a plate stand, boss-head clamp and stainless-steel cross-blade impeller, providing the main components required to assemble a complete laboratory mixing station.
Key Features
- Maximum mixing capacity of 10 litres
- Suitable for liquid viscosities up to 1,000 mPa·s
- Broad adjustable speed range from 60–2,200 RPM
- Delivers torque up to 10 Ncm
- Maintenance-free brushless DC motor
- Quiet operation for comfortable laboratory use
- Consistent mixing performance as the sample load changes
- Built-in electronic overload protection
- Compact stirrer head helps conserve valuable bench space
- IP42-rated housing for improved protection and durability
- Simple analog speed adjustment
- Supplied with stand, clamp and cross-blade impeller
Reliable Mechanical Mixing
The overhead drive rotates an impeller positioned directly inside the sample. This provides positive mechanical mixing and makes the iStir OH Jr. suitable for applications where magnetic coupling may be unreliable or insufficient.
The wide speed range allows the same instrument to perform gentle blending at lower speeds and more vigorous agitation at higher speeds. The speed should always be selected according to the vessel, impeller, liquid volume and sample viscosity.
Quiet, Maintenance-Free Motor
A brushless DC motor eliminates the need for routine carbon-brush replacement while providing quiet, efficient and dependable operation. The drive delivers torque up to 10 Ncm, enabling it to maintain effective mixing of suitable liquids with viscosities up to 1,000 mPa·s.
Compact and Easy to Position
The lightweight stirrer head can be positioned on the supplied plate stand to suit different vessel heights. The boss-head clamp securely connects the stirrer assembly to the stand, while the 300 mm shaft provides practical adjustment for common laboratory vessels.
Typical Applications
- Dissolving solids and powders into liquids
- Preparation of laboratory reagents and buffers
- Mixing oils, lotions and light cosmetic formulations
- Paint, ink and coating development
- Pharmaceutical and chemical formulation work
- Sample preparation and quality-control testing
- Research, educational and industrial laboratories
- General liquid-to-liquid blending and homogenisation
Technical Specifications
| Maximum mixing capacity | 10 litres |
| Maximum recommended viscosity | 1,000 mPa·s |
| Speed range | 60–2,200 RPM |
| Maximum torque | 10 Ncm |
| Motor type | Brushless DC motor |
| Speed control | Variable analog control |
| Overload protection | Yes |
| Protection class | IP42 |
| Stirrer-head dimensions | Approximately 80 × 42 × 166 mm |
| Stirrer-head weight | Approximately 1.3 kg |
| Supplied impeller | Cross-blade impeller, approximately 50 × 8 × 300 mm |
Supplied as Standard
- iStir OH Jr. overhead stirrer head
- Cross-blade stainless-steel impeller, approximately 50 × 8 × 300 mm
- Laboratory plate stand
- Boss-head clamp
- Power adapter and UK connection
- Operating instructions
Choosing the Correct Impeller
Impeller shape and diameter influence the direction of flow, mixing intensity and suitability for different sample viscosities. Additional radial-flow, axial-flow and tangential-flow impellers are available for specialised applications.
Need help configuring your overhead stirrer?
Please provide Auckland Scientific with the vessel dimensions, working volume, approximate viscosity and required mixing action. We can help confirm whether the iStir OH Jr. and supplied impeller are suitable for your application.
Please provide Auckland Scientific with the vessel dimensions, working volume, approximate viscosity and required mixing action. We can help confirm whether the iStir OH Jr. and supplied impeller are suitable for your application.
Product images are illustrative. Vessel shown in application photographs may not be included. Specifications may be updated by the manufacturer without notice.