Should you make your own stir-plate or purchase one? That depends both on your budget and how you will use it. We found more strength using configurations like the lower image. The lower image shows the same Stir Bar Magnet with a pair of B664 magnets underneath. The top image shows a STIR40 Stir Bar Magnet with a B44Y0 magnet underneath. In the video below, we make our own version using an inexpensive fan from a computer and a few magnets. You can purchase a stir-plate mechanism that has a motor and the magnet underneath from laboratory equipment suppliers. If the magnets are close enough, the stir bar magnet spins inside the container. The lower magnet is usually attached to a motor that spins it. A separate magnet (or magnets) is placed underneath the container, so that it attracts to the stir bar magnet. If you keep the temperatures of these N42H grade Stir Bar Magnets below 248☏ (120☌), they should retain their magnetization practically indefinitely.Ī stir bar magnet is placed inside a container, immersed in the fluid. Neodymium magnets are stronger than ceramic and Alnico magnets, and have the highest coercivity of all permanent magnet types. They are often sold in pairs to avoid this, though they can lose strength through mishandling. If exposed to a strong magnetic field, they can become weaker. The downside is that Alnico magnets have very low coercivity, meaning they are easiest to demagnetize. They have been commonly used for stir bars, especially for high temperature use. They are stronger than ceramic magnets, about 25% of the strength of a neodymium magnet of the same size. They have only about 8-10% of the pull force.Īlnico magnets are made from aluminum, nickel and cobalt. Ceramic magnets are inexpensive and common, but not nearly as strong as a neodymium magnet. Many stir bars are made with ceramic or Alnico magnets. Without a spinning shaft sticking into the container, there are no worries about leaks or lubricants contaminating the fluid. The chief advantage of this setup is that you can stir the liquid without having something stick into the container. Typically, this is produced by a stir-plate, which has another magnet rotating underneath the container. The magnet is placed within a container and made to spin with an external magnetic field. Teflon), which is not reactive for many liquids. The K&J stir bar magnets included a molded layer of PTFE (a.k.a. Start babyproofing your home today: shop safety locks for doors, windows and more here at BabySafety.A magnetic stir bar is a magnet that is encased in material that won’t react with the fluid it is immersed in. We also stock specific child safety locks such as the handy BabyDan Key Guard and the Clevamama Oven Door Lock. And to secure furniture to the wall to prevent it from tipping over, check out the handy, sturdy Dreambaby Patented Hinged Furniture Anchors 2pk. Secure cupboards and drawers with the BabyDan Super Adhesive Easy Fix Cupboard & Drawer Lock, whilst the Dreambaby Magnetic Lock 4 Locks 1 Key are the magnetic cupboard locks that will stay hidden in your cabinet and can only be opened with the powerful magnetic key included. The BabyDan Multi Lock is also ideal for fridges and freezers, whilst the Dreambaby Safety Catches - 6 Pk are also essentials, protecting your little one’s fingers from getting caught and pinched in cupboards and drawers. And no glue or screws are required for installing it. Designed by experts in the field of child safety, our vast selection includes a variety of must-haves for the home, including the Danish safety experts BabyDan Cabinet Door Lock, which works in either direction to prevent cabinets, cupboards and fridges from opening for your child. It can be tricky to know where to begin, and we’re here to help. Here at BabySafety.ie we offer you a huge selection of baby safety locks from leading brands on the market, which includes baby cupboard locks, window safety locks, cabinet door locks, magnetic cabinet locks, sliding doors locks, toilet locks and more. Always remember that babies are stronger, smarter and faster than you think: so it pays to implement an effective, early childproofing plan. You can be reassured knowing that your little ones cannot gain access to harmful corners, windows, stairs, electrical outlets and the multitude of hidden dangers. In order to rest easy, fitting child door locks and latches should be the first item on the to-do list for making your home as baby-friendly as it can be. There are many dangers within the home, and none quite so scary as the hazards of anything that has the potential to slam on little inquisitive fingers, or cabinets and cupboards containing harmful items.
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