The higher the viscosity, the larger the shaft diameter. If you are in doubt, you should choose always the larger shaft diameter, in most cases it is possible to reduce the chucking diameter. Stirrer shafts with a diameter of 8, 10 and 16 mm are most commonly used.
Then, how do stir bars work?
How does it work? A stir bar magnet is placed inside a container, immersed in the fluid. A separate magnet (or magnets) is placed underneath the container, so that it attracts to the stir bar magnet. The lower magnet is usually attached to a motor that spins it.
Additionally, how do you select an impeller?
The size of vessel used for mixing will determine the diameter of the impeller. A general rule of thumb for axial or radial flow patterns is the diameter of the impeller be ⅓ of the vessel’s diameter, so a 10 cm beaker would require approximately 3 cm impeller.
How do you use a stirrer?
How does a magnetic stirrer work?
A stir bar magnet is placed inside a container, immersed in the fluid. A separate magnet is placed underneath the container so that it attracts to the stir bar magnet. The lower magnet is usually attached to a motor that spins it. If the magnets are close enough, the stir bar magnet spins inside the container.
How many types of stirrers are there?
There are two types of Agitators commonly used, 1. Mechanical Agitators, 2. Electronically Controlled Agitators, I’ll demonstrate commonly used Mechanical Agitators.
What is an overhead stirrer?
An overhead stirrer is a laboratory device used for mixing, homogenizing, suspending, and recirculating large volumes or high-viscosity substances, which typically can’t be handled by a magnetic stirrer.
What is axial flow impeller?
An axial flow impeller is an impeller used for transporting the fluid handled along the axis.
What is coffee stirrer?
Coffee stirrers go far beyond those little wooden sticks you collect from next to the sugar packets when you grab a coffee to go. … This includes alternatives to the classic plastic or wooden stirrer and stylish stirrers for gifts or parties. Find frothers to froth milk for lattes, cappuccinos or hot chocolates.
What is magnetic stirrer used for?
A magnetic stirrer is a device widely used in laboratories and consists of a rotating magnet or a stationary electromagnet that creates a rotating magnetic field. This device is used to make a stir bar, immerse in a liquid, quickly spin, or stirring or mixing a solution, for example.