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Rolling-ball viscometer:
Lovis 2000 M/ME

  • Measures dynamic viscosity and relative viscosity from only 100 µL of sample
  • Powerful polymer software automatically delivers intrinsic viscosity, molar mass, K-value, and more
  • Referenced in US and European Pharmacopoeia
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Lovis 2000 M/ME is a rolling-ball viscometer which measures the rolling time of a ball through transparent and opaque liquids based on Hoeppler's falling ball principle. The instrument is mainly used for viscosity measurements of low viscous liquids for R&D applications, in the pharmaceutical and chemical industries. A measurement with Lovis 2000 M/ME can yield dynamic viscosity, intrinsic viscosity, molar mass of a polymer and more.

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Key features

For R&D

  • Small sample amount (starting from 100 μL)
  • Sample recovery
  • Wide temperature range (-30 °C to 100 °C /-22 °F to 212 °F)
  • Wide viscosity range (0.3 mPa.s to 10,000 mPa.s)
  • High accuracy
  • Variable inclination angle for testing shear-dependent flow behavior

For pharmaceutical and medical labs

  • Included in US and European Pharmacopoeia
  • Pharma qualification packages available
  • Optional modular combination with Anton Paar instruments for measuring density, refractive index, turbidity and pH value
  • Flow-through filling for large sample throughput

For the chemical industry

  • Hermetically closed system for volatile or toxic samples
  • High chemical resistance (borosilicate glass or PCTFE)
  • Special polymer measuring and evaluation features
  • Automatic filling using autosampler
  • Testing of opaque samples

Technical specifications

Viscosity
Viscosity range0.3 mPa.s to 10,000 mPa.s
Repeatability s.d.up to 0.1 % 1)
Accuracyup to 0.5 % 1) 2)
Temperature
Temperature range+ 5 °C to 100 °C
Repeatability s.d.0.005 °C
Accuracy0.02 °C
Measuring time
Resolution0.001 s
Accuracy0.05 %
Further specifications
Test durationminimal 30 s, typical 3 min
Sample volume0.1 mL to 0.8 mL
Inclination15° to 80° in 1° steps
Repeatability s.d.0.02 °
Accuracy0.1 °
Shear rate0.5 s-1 to 1000 s-1
influenced by capillary size and inclination
1) depends on sample type and measuring settings,
without changing the ball
2) for the range in which the calibration constant was determined,
not including uncertainty of reference standards

Standards

A

ASBC Beer-32: Viscosity (International Method)
ASBC Wort-13B: Viscosity Rolling Ball Method

D

DIN 53015
DIN EN ISO 12058-1

P

Ph. Eur. 2.2.49 - FALLING BALL VISCOMETER METHOD

U

USP 911 - Viscosity (Capillary Viscometer Methods)
USP 913 - Rolling Ball Viscometer Method

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