คุณลักษณะ

• Take 10 mL of the sample in an Ostwald viscometer and use it to measure the relative viscosity of water at the same temperature in a thermostatic bath at 30±0.1°C. The number of seconds of water outflow at 30°C is 100±20 seconds. Capillary inner diameter is 0.57~0.60 mm. Manufactured with reference to JISK6726-1994.