NDJ-1C Brookfield Rotational Viscometer ◆◆Purpose: The NDJ-1C Brookfield Rotational Viscometer is designed and manufactured in accordance with the requirements specified in T0625 "Asphalt Brookfield Rotational Viscosity Test (Brookfield Viscometer Method)" of the JTJ052 "Standard Test Methods of Bitumen and Bituminous Mixtures for Highway Engineering" of the People's Republic of China. It is an upgraded version of the company's NDJ-1 and NDJ-1B rotational viscometers, suitable for measuring the absolute viscosity of Newtonian liquids and the apparent viscosity of non-Newtonian liquids. This instrument features high measurement sensitivity, reliable test results, user-friendly operation, and an aesthetically pleasing design. It is widely applicable for measuring the viscosity of various fluids such as asphalt, hot melt adhesives, paraffin, and polymers. ◆◆Technical Specifications: ◆ Measurement range: 100 mPa·s to 200,000 mPa·s; ◆ Rotor specifications: Four rotors (No. 21, 27, 28, 29); ◆ Rotor speeds: Four gears (5, 10, 20, 50 r/min); ◆ Measurement error: ±1% (F·S); ◆ Measurement modes: Manual and automatic; ◆ Temperature control range: Room temperature to 200°C; ◆ Temperature control accuracy: ±0.1°C; ◆ Sample container volume: 20 ml; ◆ Power supply: AC 220V ±10%, 50 Hz; ◆ Operating temperature: 5°C to 35°C; ◆ Relative humidity: Not exceeding 80%.