Magnetic stir bars are highly chemically inert, small magnetic bars. Most heaters have a built-in magnet which can rotate: this causes the stir bar to rotate and the mixture to become homogenized.
Irabiagailu magnetikoarentzako imanak kimikoki oso inaktiboak diren barra magnetiko txikiak dira. Berogailu behienek biratu daitekeen iman bat dute. Biraketa honekin irabiagailu magnetikoen barrek biratu eta nahasketa homogeneotuko dute.