Laboratory Overhead Stirrer Manufacturer in India

Bionics Scientific is a laboratory overhead stirrer manufacturer in India, offering powerful mechanical stirring systems for mixing liquids in laboratories, research facilities and industrial applications. Our overhead stirrers are designed for applications where reliable mixing, controlled stirring speed and stable operation are required, particularly when handling larger volumes or high-viscosity liquids.

Also referred to as mechanical stirrers, vertical stirrers or flange mounted stirrers, these units use a motor-driven stirring shaft to provide consistent mixing throughout the sample. Compared with basic magnetic stirrers with or without hot plate, an overhead stirrer is suitable for applications requiring greater stirring force, larger liquid volumes and different types of stirring shafts or blades.

Bionics Scientific manufactures two standard laboratory overhead stirrer models with stirring capacities ranging from 5 to 60 litres and 10 to 120 litres. Both models provide an adjustable rotation range of 0 to 1500 RPM with stepless speed control, allowing the operator to select an appropriate stirring speed according to the liquid, volume and mixing requirement.

Laboratory Overhead Stirrer for Efficient Mixing

Our laboratory overhead stirrers combine a powerful motor, robust support structure and interchangeable stirring shafts to provide stable and efficient mixing. The adjustable speed system helps users control the mixing process according to the viscosity and volume of the material.

The BST/OS-1000 model is equipped with a 1000W carbon brush motor and supports stirring volumes from 5 to 60 litres. For larger mixing requirements, the BST/OS-2000 uses a 2000W carbon brush motor and supports volumes from 10 to 120 litres. Both models operate on a 220/230 Volt, 50 Hz power supply.

Overhead Stirrer Features

• Powerful mechanical stirring and mixing
• Stirring capacity up to 120 litres
• Adjustable rotation from 0 to 1500 RPM
• Stepless speed control for different mixing requirements
• Suitable for low and high viscosity liquids
• Choice of different stirring shafts and blades
• Heavy-duty support structure for stable operation
• Designed for laboratory and industrial mixing applications
• Available in standard and customized configurations

Overhead Stirrer Specifications

Specification	BST/OS-1000	BST/OS-2000
Rotation	0 to 1500 RPM	0 to 1500 RPM
Motor	1000W / Carbon Brush Motor	2000W / Carbon Brush Motor
Stirring Capacity	5 to 60 Litres	10 to 120 Litres
Working Head	Φ120	Φ150
Speed Control	Stepless Speed Control	Stepless Speed Control
Weight	32 kg	42 kg
Power Supply	220 / 230 Volts, 50 Hz	220 / 230 Volts, 50 Hz

Applications of Laboratory Overhead Stirrers

Laboratory overhead stirrers can be used for a wide range of mixing, blending and sample preparation processes. For laboratories that need simultaneous heating, our laboratory hot plates are another useful option. Their ability to work with different stirring shafts and adjustable speeds makes them suitable for laboratories as well as selected production and process applications.

• Chemical and formulation laboratories
• Pharmaceutical research and development
• Paint, coating and pigment preparation
• Cosmetic and personal care formulation
• Food and beverage research laboratories
• Adhesive and resin mixing
• Research institutes and educational laboratories
• Industrial quality control laboratories
• Mixing of high-viscosity liquids and solutions

How Does an Overhead Stirrer Work?

An overhead stirrer uses an electric motor to rotate a stirring shaft positioned inside the liquid or sample container. A suitable blade, impeller or dissolver attached to the shaft transfers the rotational force of the motor into the liquid, producing controlled circulation and mixing.

The required stirring speed depends on factors such as liquid viscosity, sample volume, vessel dimensions and the type of stirring blade being used. Stepless speed adjustment allows the operator to gradually increase or decrease the rotation speed to achieve the desired mixing conditions.

Choosing the Right Overhead Stirrer

Selecting an appropriate overhead stirrer depends primarily on the volume and viscosity of the material being mixed. Users should also consider the required stirring speed, motor capacity, vessel size and type of stirring shaft.

For applications with volumes between 5 and 60 litres, the BST/OS-1000 provides a 1000W motor and adjustable speed up to 1500 RPM. Applications involving larger volumes from 10 to 120 litres can use the BST/OS-2000, which is equipped with a 2000W motor.

Overhead Stirrer Manufacturer in India

Bionics Scientific Technologies (P) Ltd. manufactures laboratory equipment for research, testing and industrial laboratories. Our overhead stirrers are available in standard configurations, and customized units can also be developed for specific application requirements.

Customers looking for an overhead stirrer can also explore our multi position magnetic stirrers for applications that require simultaneous stirring of multiple samples. Our team can be contacted with details such as required stirring volume, material viscosity, speed requirement and application. This information helps our technical team recommend a suitable model and stirring configuration.

Additional Stirring Reference

For an independent technical overview of magnetic and overhead stirring, including selection based on sample volume and viscosity, read IKA's magnetic vs. overhead stirring guide.