You still have to empty the dirt bin every so often, but the cyclonic action means a Dyson with a full dirt bin works equally as well as one that's just been emptied.All this goes to show that, no matter how good an invention appears to be, someone can always make it better! (...
Laboratory tests examine the biological, chemical and physical properties of the cells and molecules that make up a blood specimen. The first step is often to centrifuge a blood specimen into separate components. This divides the sample into one portion that contains solid components, such as cells...