Водоворот магнитный magnetic mixer скачать в хорошем качестве

Водоворот магнитный magnetic mixer

Все технические новинки Науч. Студии :    • ✓ Науч. Студия ✓ Sergey Kachan   А также лайф хаки и многое др. Подпишись на новые выпуски: https://www.youtube.com/user/Dssvvx/v... Заказать рекламу тел: 89263745692 E-mail:[email protected] Поддержать канал можно задонатить на эти кошельки: Яндекс кошелек: 4100 1172 2127 025 Единый кошелек W1: 1933 6045 8016 СберБанк viza: 4276 4000 1408 1567 magnetic mixer A #magnetic #stirrer or #magnetic #mixer is a l#aboratory $device that $employs a r#otating magnetic field to cause a stir bar (also called "flea") #immersed in a #liquid to spin very quickly, thus stirring it. The rotating field may be created either by a rotating magnet or a set of stationary electromagnets, placed beneath the vessel with the liquid. A stir bar mixing a solution on a combined hot-plate magnetic-stirrer device. The left knob controls the stirring rate and the right knob controls heating. Magnetic stirrers are often used in chemistryand biology, where they can be used inside hermetically closed vessels or systems, without the need for complicated rotary seals. They are preferred over gear-driven motorized stirrers because they are quieter, more efficient, and have no moving external parts to break or wear out (other than the simple bar magnet itself). Magnetic stir bars work well in glass vessels commonly used for chemical reactions, as glass does not appreciably affect a magnetic field. The limited size of the bar means that magnetic stirrers can only be used for relatively small experiments, of 4 liters or less. Stir bars also have difficulty in dealing with viscous liquids or thick suspensions. For larger volumes or more viscous liquids, some sort of mechanical stirring is typically needed. Because of its small size, a stirring bar is more easily cleaned and sterilized than other stirring devices. They do not require lubricantswhich could contaminate the reaction vessel and the product. Magnetic stirrers may also include a hot plate or some other means for heating the liquid.