Overhead stirrers, also known as mechanical stirrers, are essential equipment in laboratories requiring powerful and efficient mixing of high-viscosity liquids, concentrated solutions, or mixtures in large volumes. Unlike magnetic stirrers, which are generally limited to low to medium viscosity liquids and smaller volumes, overhead stirrers provide the necessary torque to handle more challenging applications, ensuring perfect homogeneity of the mixture.
An overhead stirrer operates using an electric motor positioned above the stirring vessel, connected to a shaft with an impeller (stirring element) immersed directly in the liquid. The motor provides high torque that enables powerful rotation of the impeller, resulting in effective mixing even of the most viscous liquids or mixtures containing dissolved or suspended solids. The ability to match the impeller type to the vessel size, liquid type, and required level of mixing offers great flexibility in use.
Modern overhead stirrers include precise speed control, often with a digital display, and the ability to maintain constant torque even as viscosity changes during the process. Many models also offer programming capabilities, external temperature monitoring (for stirring combined with a heating or cooling bath), and advanced safety mechanisms such as overload detection and protection. Their stable and robust construction, together with a wide range of accessories (stands, rods, impellers), make them a versatile solution for various industrial and laboratory applications.
Overhead stirrers are critical in a wide range of processes requiring powerful and controlled mixing:
For tasks requiring more power than a magnetic stirrer can provide, an overhead stirrer is the precise and efficient tool for achieving consistent and reliable results.
Labotal offers a wide selection of overhead stirrers from world-leading brands, such as IKA, known for their reliability, high performance, and durability even under demanding laboratory conditions. We supply models with different speed and torque ranges, suitable for various mixing volumes (from hundreds of mL up to tens of liters or more) and different viscosity levels. Our selection includes stirrers with precise digital speed control, advanced safety features, and a wide range of impellers and accessories for optimal adaptation to your specific application.
Choosing an overhead stirrer from Labotal ensures you receive high-performance equipment backed by the professional service and support of our expert team. Our specialists are available to provide consultation on selecting the appropriate model, the correct impeller type, and the necessary accessories for your application. We provide installation, comprehensive training, ongoing technical support, and laboratory services for calibration and maintenance, to ensure your overhead stirrer operates accurately and reliably for years, helping you achieve the best results in your research or production processes.
We invite you to browse Labotal’s full catalog of overhead stirrers and discover our range of advanced solutions for powerful and precise mixing. For professional consultation and complete customization of equipment for your specific needs, please do not hesitate to contact the Labotal team.
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