Coriolis meters give excellent accuracy, with measurement uncertainties of +- 0.2% being typical. They also have low maintenance requirements. However, apart from being expensive(typical cost is 6000), they suffer from a number of operational problems. Failure may occur after a period of use because of mechanical fatigue in the tube. Tubes are also subject to both corrosion caused by chemical interaction with the measured fluid and abrasion caused by particles within the fluid. Diversion of the flowing fluid around the flow meter causes it to suffer a significant pressure drop, although this is much less evident in straight tube designs.