How to use Rotational Viscometer to extend service life

Due to its own advantages, the Rotational Viscometer is widely used to measure the viscous resistance and liquid dynamic viscosity of liquids, and is widely used to measure the viscosity of various fluids such as oils, paints, plastics, food, drugs, cosmetics, and adhesive products.

Precautions and usage methods of Rotational Viscometer:
　　1. The machine must be kept level.
　　2. Avoid air bubbles when the rotor is placed in the sample, otherwise the measured viscosity value will decrease. The way to avoid it is to put the rotor into the sample obliquely, and then install the rotor. The rotor cannot touch the cup wall and bottom. The sample to be measured needs to pass the prescribed scale.
　　3. When measuring different samples, it is necessary to keep the rotor clean and dry. If there are other samples or water remaining on the rotor after cleaning, it will affect the accuracy of the measurement.
　　4. The acidity (PH) should not exceed 2. If the acidity is too high, a special rotor should be selected. When using ULA, the sample volume must be determined.
　　5. When connecting the rotor, use your left hand to gently lift and pinch the arbor (on the host), and rotate the rotor with your right hand. This operation is to protect the arbor and hairspring inside the fuselage, which can prolong the service life of the instrument.
　　6. The value should be selected when the value is relatively stable, otherwise there will be a large error in the obtained value.
　　7. When choosing a rotor, it depends on the viscosity of the sample to be measured and the measurement range of which rotor is closer, so choose which number.
　　8. Select the viscosity standard liquid according to the measured viscosity range, and verify the instrument before each use of the viscometer, or check it regularly to ensure the accuracy of the measurement.
　　The above are the precautions and usage methods of the Rotational Viscometer, I hope it will be helpful to everyone.