Centrifuge with spiral-gear-drive for urine-, water-and milk examinations with 2-3000 revolutions per minute and for blood- and sputum examinations with 10-12000 revolutions per minute. The different speeds are regulated by a simple repin of the hand crank. With one attachment besides of a smooth and a graduated small pipe and one attachment according to Daland with two graduated small pipes for blood examinations.
