The Ubbelohde viscosity constant temperature bath (high temperature type) is designed specifically for viscosity testing and consists of a water tank and a controller. The viscosity constant temperature bath provides a stable temperature field and testing platform, and the instrument can also be used as a high-precision bath for other experiments. The characteristics of this instrument are: full spray coating treatment, durable and long-lasting; Double layer cylinder structure, high-precision temperature controller, temperature control accuracy up to ± 0 1℃; High temperature, Kanfen counter current capillary viscometer special type.