Anton Paar’s Lovis 2000 M/ME rolling-ball viscometer can be used to measure a ball’s rolling time through transparent and opaque liquids. This is carried out according to Hoeppler's falling ball principle.
The Lovis 2000 M/ME is routinely used in R&D applications throughout the chemical and pharmaceutical industries. It is mainly used for measuring the viscosity of low-viscous liquids.
This instrument can yield useful measurement data such as a polymer's molar mass, dynamic viscosity, and intrinsic viscosity.
Key Features
For R&D Applications
- Small sample requirements - from only 100 μL
- Simple sample recovery
- Wide viscosity range from 0.3 mPa.s to 10,000 mPa.s
- Exceptional accuracy
- Wide temperature range from 5 °C to 100 °C (41 °F to 212 °F) without counter-cooling; or as low as -30 °C (-22 °F) with counter-cooling
- Variable inclination angle to enable investigations of shear-dependent flow behavior
For Pharmaceutical and Medical Laboratories
- US and European pharmacopoeia compliance
- Optional pharma qualification packages
- Large sample throughput via flow-through filling
- Use in conjunction with other Anton Paar instruments to measure density, refractive index, pH value, and turbidity.
For the Chemical Industry
- Hermetically closed system suitable for testing volatile or toxic samples
- Autosampler-based automatic filling capabilities
- Ability to test opaque samples
- Excellent chemical resistance (PCTFE or borosilicate glass)
- Innovative features for polymer measuring and evaluation
Technical Specifications
Source: Anton Paar GmbH
| Viscosity |
| Viscosity range |
0.3 mPa.s to 10,000 mPa.s |
| Repeatability s.d. |
up to 0.1 % 1) |
| Accuracy |
up to 0.5 % 1) 2) |
| Temperature |
| Temperature range |
5 °C to 100 °C (41 °F to 212 °F) without counter-cooling
Down to -30 °C (-22 °F) with counter-cooling |
| Repeatability s.d. |
0.005 °C |
| Accuracy |
0.02 °C |
| Measuring time |
| Resolution |
0.001 s |
| Accuracy |
0.05 % |
| Further specifications |
| Test duration |
minimal 30 s, typical 3 min |
| Sample volume |
0.1 mL to 0.8 mL |
| Inclination |
15° to 80° in 1° steps |
| Repeatability s.d. |
0.02 ° |
| Accuracy |
0.1 ° |
| Shear rate |
0.5 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