Brand: Thermo Scientific
Features:
- Hermetically sealed magnetic stirrer with separate, required external controller (sold separately) ensures that only the sealed stirrer is exposed to the CO2 environment to protect samples
- Stir speeds from 5 to 120rpm and volumes of up to 20L
- Operating conditions are -10 to +56 degrees C at 100 percent relative humidity
- Heatless operation for protection of heat-sensitive cell cultures
- Low-shear acceleration on startup and even stirring as low as 5rpm to protect samples and minimize vessel breakage
Details: The Thermo Scientific Cimarec Biosystem slow speed magnetic stirrer for cell cultures without controller, has a stirring range of 5 to 120rpm, a maximum stirring volume of up to 20L, and can be operated in environments of -10 to +56 degrees C at 100 relative humidity. It has low-shear acceleration on startup and even stirring at speeds as low as 5rpm to protect samples and minimize vessel breakage. This stirrer conforms to Ingress Protection 68 (IP68) and European Conformity (CE) marking standards and has a chemical resistant stainless-steel housing for durability and easy cleaning. This model's slow stirring and low heat output is designed to protect cell cultures in CO2 incubators. It is hermetically sealed and, with a required external controller (the Biomodul 40 B, sold separately), ensures that only the sealed stirrer is exposed to the CO2 environment to protect the stirrer and samples. These units are suitable for stirring thermally-sensitive cultures such as microcarrier cell cultures, broth cultures, and cell suspensions. A lab stirrer mixes substances for a variety of academic, research, or industrial applications such as solutions in chemistry and biology and food and beverage production. There are two basic types of stirrers: magnetic or overhead. Magnetic stirrers are ideal for smaller volumes and low-viscosity solutions, have no moving external parts, are considered easier to clean than overhead models, and do not need lubricants which can contaminate the solution being mixed. Magnetic stirrers have a rotating magnetic field that causes a separate magnetic stir bar, when immersed in a solution, to spin and stir the solution. They usually have a plate on a base and either an internal or external controller. Some models have multiple stirring positions to stir more than one vessel at once, and in some the plate is also a hot plate for heating the solution while stirring. They can be submerged in water and used inside closed vessels or systems, such as incubators. Overhead stirrers are ideal for large volumes and high-viscosity solutions in open vessels, and usually have a stirring blade and a drive shaft typically made of stainless steel or a chemically-resistant polymer, a controller, and a motor. This type of stirrer often needs more space than a magnetic stirrer, and can be more difficult to set up and to clean afterwards. However, by changing the stirrer blade shape, they offer control over how a substance is stirred. For example, certain shapes are suitable for high-speed stirring of low viscosity substances, while other shapes are suitable for low-speed stirring of high viscosity substances. Both magnetic and overhead stirrers come in analog and digital models, and a variety of configurations and sizes. Thermo Fisher Scientific manufactures analytical instruments, laboratory equipment, consumables, and software under the Thermo Scientific, Fisher Scientific, Barnstead, and Nalgene brands, among others. The company is headquartered in Waltham, MA.
