The Ostwald–Folin pipette, made by Wilhelm Ostwald and refined by Otto Folin, is usually a style of volumetric pipette utilized to evaluate viscous fluids for instance complete blood or serum.[7][8] procedure: https://cyrusuymr826203.goabroadblog.com/28208687/5-tips-about-types-of-pipette-you-can-use-today