Viscometers

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Many industries measure viscosity, though the biggest user is the quality control department using single-point measurement. Research scientists also use viscometers to see how a material reacts to being sheared. The task at hand determines the kind of viscometer to use— different viscometers measure different magnitudes of viscosity and different changes in it. According to one expert, the most important factor to consider when buying a viscometer is robustness, even if users have to give up some sensitivity.

Top 5 Signs That Your Viscometer Needs to be Serviced or Replaced

article image article image The instrument does not pass the leak test.
article image The measuring values of a known sample are incorrect.
article image Visible signs of leaking at one or more of the seals.
article image A strange (screeching) noise occurs when the motor starts up to the measuring speed.
article image If the relative deviation of the viscosity and/or the density is out of tolerance.

Top 6 Questions That You Should Ask When Buying a Viscometer

article image What kind of temperature control and spindle rotational speed control does the instrument offer? Temperature is critical, since viscosity generally rises as a fluid cools. Spindle rotation may also affect viscosity.
article image What range of accessories (ex. sample holders) does the company offer for the instrument?
article image How easy to use is the viscometer? Since most users nowadays aren’t experts, an easy-to-use instrument is probably the best fit for most labs.
article image What are the sizes of the samples you’ll be working with? This may be an issue when analyzing very expensive materials such as drugs or proteins and cost of ownership is also important for high-volume applications.
article image What is the instrument’s measurement range? If you’re analyzing petroleum, from crude oil to gasoline, do you want to change out the capillary for each measurement, or use something that works all the way through?
article image What kind of service and support does the company provide?

Recently Released Viscometer


Viscotek Viscometer Detector

  • Enhances GPC/SEC analysis for polymer development
  • Viscotek viscometers can be supplied as part of an integrated triple detector Viscotek GPC/SEC system or as an addition to any existing separation system
  • GPC/SEC is a central analytical technique for the analysis of proteins, polymers and macromolecules

Malvern
www.malvern.com


Lovis 2000 M/ME Rolling-Ball Viscometer

  • Measures the rolling time of a ball through transparent and opaque liquids according to Hoeppler’s falling ball principle
  • Measurement requires only 400 μL sample volume
  • Compact and economical, and saves space in the lab
  • Results are given as relative, kinematic or dynamic viscosity
  • Provides first results after only 30 seconds

Anton-Paar
www.anton-paar.com


ReactaVisc RV3 Lab-Scale Viscometer

  • Now available in intrinsically safe versions certified for use in Hazardous Areas up to and including Zone 0 (explosive atmosphere continuously present), equivalent to Class 1 Division 1 Group A
  • Designed primarily for use in reaction vessels of virtually any capacity
  • Viscosity is measured every two seconds and displayed on the separate VP550L signal processor unit

Hydramotion
www.hydramotion.com


DV2T Viscometer

  • 5-inch full color, touch screen display supports multiple languages
  • Displayed info includes: viscosity (cP/mP·s), temperature (°C /°F), shear rate/stress, % torque, spindle/speed, step program status
  • Features enhanced security with customizable user access, date/ time stamp file, password access, portable log-in settings
  • Built-in options include timed tests, data averaging, programmable QC limits/alarms, customizable speed/spindle lists, on screen data comparison

Brookfield Engineering
www.brookfieldengineering.com


Viscometer Manufacturers


A & D Weighing www.andweighing.com

Anton Paar www.anton-paar.com

ATS Rheo Systems www.atsrheosystems.com

Brookfield Engineering www.brookfieldengineering.com

Cannon Instrument Company www.cannoninstrument.com

Hydramotion www.hydramotion.com

Kinematica www.kinematica-inc.com

Malvern www.malvern.com

Petrolab Company www.petrolab.com

RheoSense www.rheosense.com

Spectro www.spectroinc.com

Stony Brook Scientific www.stonybrooksci.com

Wyatt Technologies www.wyatt.com

 

Categories: Lab Products

Published In

2013/2014 Product Resource Guide Magazine Issue Cover
2013/2014 Product Resource Guide

Published: August 9, 2013

Cover Story