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Your cart is empty. Please kindly leave us the message about which size do you needInstructions for usage:
Capillary viscometer by structure, shape can be divided into Wu's, Fen's, Ping's, countercurrent four. They measure the viscosity of the sample is kinematic viscosity. Has been widely used in petroleum, chemical, light industry, machinery and electrical, defense, transportation, coal, metallurgical medicine, food, paper, textile, scientific research, institutions of higher learning and other units. Proper use of capillary viscometer, to ensure product quality and accuracy of scientific research data is very important.
1.Washing and drying:
Viscosity meter must be cleaned before use, generally first to dissolve residues in the viscometer of the solvent repeatedly washed, then alcohol or gasoline to wash, and then fuming sulfuric acid or heavy chromium potassium wash lotion for 2-3 hours, the last Rinse with tap water, distilled water, put the oven, heated to about 150 ℃, or in the natural temperatur
Introduction of Ubbelohde viscometer
When the fluid is subjected to external forces, there is a tangential internal friction between the flowing liquid layers. If the liquid is to pass through the tube, a portion of the work must be consumed to overcome the resistance of the flow. At low flow rates, the liquid in the tube advances in a straight line parallel to the tube wall. The liquid closest to the tube wall is virtually stationary, and the further away from the tube wall, the faster the flow. The tangential force f between the layers is proportional to the contact area A between the two layers and the velocity difference Δv, which is inversely proportional to the distance Δx between the two layers: where η is the proportionality coefficient, called the viscosity coefficient of the liquid, Referred to as viscosity.
Delivery Technologies
Reviewed in the United States on May 8, 2024
Amablemente solicito el certificado de calibración de fabrica o un certifiacado donde vea el valor de la K.
Delivery Technologies
Reviewed in the United States on May 8, 2024
Amablemente solicito el certificado de calibración de fabrica o un certifiacado donde vea el valor de la K.
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