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Kinematic Viscometer/ Kinematic Viscosity Tester

Kinematic Viscometer/ Kinematic Viscosity Tester

Model: UT2100C; ISO 1628, ASTM D445

UT2100C Kinematic Viscosity Tester / Kinematic Viscometer is equipped with both dynamic viscosity testing and viscosity index calculation functions. It can time the movement of a sample and automatically calculate the final result of kinematic viscosity. This method is suitable for determining the kinematic viscosity of liquid petroleum products (referring to Newtonian fluids), with units of m²/s, commonly expressed in practice as mm²/s. Dynamic viscosity can be obtained by multiplying the measured kinematic viscosity by the density of the liquid. This method measures the time it takes for a certain volume of liquid to flow under gravity through a calibrated glass capillary viscometer at a constant temperature. The product of the viscometer's capillary constant and the flow time gives the kinematic viscosity of the liquid at that temperature. The product of the kinematic viscosity and the density of the liquid at the same temperature gives the dynamic viscosity at that temperature.  

General introduction

UT2100C Kinematic Viscosity Tester / Kinematic Viscometer is equipped with both dynamic viscosity testing and viscosity index calculation functions. It can time the movement of a sample and automatically calculate the final result of kinematic viscosity. This method is suitable for determining the kinematic viscosity of liquid petroleum products (referring to Newtonian fluids), with units of m²/s, commonly expressed in practice as mm²/s. Dynamic viscosity can be obtained by multiplying the measured kinematic viscosity by the density of the liquid. This method measures the time it takes for a certain volume of liquid to flow under gravity through a calibrated glass capillary viscometer at a constant temperature. The product of the viscometer's capillary constant and the flow time gives the kinematic viscosity of the liquid at that temperature. The product of the kinematic viscosity and the density of the liquid at the same temperature gives the dynamic viscosity at that temperature.  


Kinematic Viscometer/ Kinematic Viscosity Tester

Temperature Probe Immersion in Constant Temperature Bath

Key Features

  • Main features
  • Using notice
  • Standard reference

2.1. Color touchscreen LCD, Chinese character display, clear and easy to operate.
2.2. Set viscometer constants and control temperature values; the instrument has a memory function.
2.3. Uses imported sensors and software temperature control technology, with a wide temperature control range and high temperature control accuracy.
2.4. Non-volatile calendar clock, automatically displays the current time on startup.
2.5. The instrument can choose to test kinematic viscosity or dynamic viscosity.
2.6. The instrument has a built-in viscosity index calculator, which is very convenient.

2.7. Mainly consists of a heating tube, capillary tube, test rack, stirring motor, cabinet thermostat bath, lighting, electrical control components, LCD screen, printer, and other parts.

1. The bath liquid in the bathtub must be free of impurities and floating particles to avoid clogging the test hole. Newly replaced bath liquid often produces bubbles when heated, which can affect the testing, especially if there are bubbles inside the test hole, which has the most severe impact. After placing the capillary, check if there are bubbles inside the test hole. If there are bubbles, use a rubber tube to blow air and remove them.  

2. Before use, reliable grounding is required.  

3. The interval between restarting the instrument and using it again should be more than 15 minutes. If the instrument is started in a cold bath state, it can only be used 45 minutes later.  

4. When using a fully immersed thermometer to calibrate the temperature, the effective scale of the thermometer must not be exposed above the liquid surface of the thermostat bath.  

5. The instrument must not be stored or used in humid environments or environments with corrosive gases.  

6. When clamping the capillary, pay attention to the top height to avoid water entering the test tube.


ASTM D445  Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

ISO 1628-1  Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 1: General principles

ISO 1628-3  Plastics — Determination of the viscosity of polymers in dilute solution using capillary viscometers — Part 3: Polyethylenes and polypropylenes 

UNE 53364  PLASTICS. DETERMINATION OF VISCOSITY NUMBER OF METHYL METHACRYLATE POLYMERS AND COPOLYMERS IN DILUTE SOLUTION 

GOST 18249  Plastics. Method for Determining the Viscosity of Diluted Polymer Solutions

Main technical specification

Number of liquid bath holes4 pcs
Kinematic viscosity measurement range0.5~20000 mm²/s
Dynamic viscosity measurement range0.3~40000 mPa·s
Temperature control rangeRoom temperature +5℃ to 120℃
Temperature control accuracy≤±0.02℃ below 70℃;
≤±0.03℃ from 70℃ to 120℃
Power supply50Hz, 220V Single phase
Heating power800W


Solutions reference list:

Measurement temperature (°C)Constant temperature bath   liquid
50 ~ 100Clear mineral oil,   glycerol (glycerin) or 25% ammonium nitrate aqueous solution (a clear layer   of mineral oil floats on the surface of this solution).
20 ~ 50Water
0~ - 20A mixture of water and   ice, or a mixture of ethanol and dry ice (solid carbon dioxide).
0~ - 50A mixture of ethanol and   dry ice, in the absence of ethanol, can be replaced with unleaded gasoline


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Beijing United Test Co., Ltd.