U-visc 220 Omnitek U-Visc Automatic Viscometry System

Last Updated
16 Mar 2023
Country Origin
United States
Minimum Order
1 unit

Specification of U-visc 220 Omnitek U-Visc Automatic Viscometry System


The Omnitek U-Visc is the next generation of completely automatic viscometry systems. The system combines several unique features, making it the instrument of choice in many applications, ranging from QC to R&D to used oil analysis. While offering full compliance with ASTM D445/D446, the specially designed viscometer tubes cover a 100-fold range, e.g. from 1 to 100 mm2/s. The tubes are based on the well-known and proven Ubbelohde design, but only require 8-16 mL of sample and approx. 12-15 mL of solvent for cleaning. Available with single or dual solvent cleaning, the instrument measures kinematic viscosity in Newtonian fluids like lubricants, fuels, or dissolved plastics between 0.15 and 25,000 mm2/s. 


Conforms to the specifications of: 

ASTM D445, D446, D2270; IP 71; ISO 3104, ISO 3105, ISO 2909; DIN 51562; FTM 791-305; NF T 60-100

Measuring Range: 0.15 - 25,000 mm2/s @ 40 °C

Temperature Range: 15 to 150 °C (59 - 302 °F)

Temperature Stability: 15 - 100 °C ±0.01 °C; Up to 150 °C  ±0.03 °C (*For temperatures around ambient, and external chiller is required)    

Timer Accuracy: 0.001 s

Sample Volume: 8 - 16 mL

Sample Introduction: Vacuum / Pressure

Solvent Consumption: 10 - 12 mL per cycle (single), 12 - 15 mL per cycle (double)

Sample throughput: 

    U-Visc 110: Up to 10 measurements per hour

    U-Visc 120: Up to 20 measurements per hour

    U-Visc 210: Up to 20 measurements per hour

    U-Visc 220: Up to 40 measurements per hour

    ** Measurements per hour depends on the viscosity, tube, temperature and solvents chosen

Viscometer Type: Ubbelohde based

Sensor Type: Thermal / Optical

Communication: RS232

PC Control: Multiple instruments can be controlled with one PC

Data Export: USB


Test Method

Kinematic viscosity is of primary importance in the design and selection of a wide range of petroleum products. Calibrated capillary viscometers are used to measure flow under gravity or vacuum at precisely controlled temperatures.


  • Applicable for fuels, base oils, formulated oils, and other petrochemical fluid chemicals as well as diluted polymers

  • Meets all ASTM, EN, ISO, and DIN standards related to kinematic viscosity and diluted solution viscosity standards

  • Extremely accurate temperature control

  • Extremely accurate flow-time measurement independent of fluid type

  • Viscometer filling by either vacuum or pressure method

  • Little sample volume / little solvent consumption

  • High Capacity; up to 10 measurements per bath per tube per hour

  • Innovating viscometer tube cleaning allowing cross contamination free operation

  • Easy viscometer tube exchange

  • Suitable for petrochemical fluids and diluted solution viscosity samples

  • Chemically resistant to an extended range of fluids and solvents

  • Multiple versions available covering a wide variety of requirements

  • Compact design

Additional Accessories

  • Sample Preheating

  • Pedestal Base

  • Cooling Circulator (for measurement around room temperature)

  • Compressor

  • PC for Instrument Control

  • Polyethylene Sample Cups (750/pack)

  • Glass Sample Cups (50/pack)

  • Viscometer Tubes

  • Spare Parts Kit

Included Accessories

  • 16 Position Autosampler per Tube

  • 100-fold Viscometer Tube(s)

  • Bath Oil

  • Cooling Coil

  • Reference Standards

  • Dual Solvent Injection

  • Advanced PC Software

Electrical Requirements

115V 60Hz

230V 50Hz


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