The Lovis 2000 M/ME microviscometer offers precise viscosity measurements for clear and opaque fluids alike. The instrument adapts Hoeppler’s Falling Ball Principle by precisely measuring the rolling time of the ball at selectable inclination angles, thereby enhancing measurement accuracy for various sample types, particularly for low-viscosity or shear-thinning fluids.
Image Credit: Anton Paar GmbH
The instrument’s precision makes it particularly valuable for research and development, quality control, and production monitoring in the chemical and pharmaceutical industries. This versatile instrument can determine a range of properties including shear rate, dynamic viscosity, and automatically calculating key metrics for the polymer industry like intrinsic viscosity, K-value, or average molar mass, supporting both innovative research and consistent product quality.
Image Credit: Anton Paar GmbH
Key Features
The instrument is ideally suited for research and development as well as quality control, thanks to the following features:
- Minimal Sample Requirements: Measurements possible with volumes as low as 100 μL.
- Sample Recovery: Manually or with sample recovery unit.
- Wide Temperature Range: From 5 °C to 100 °C (41 °F to 212 °F) without counter-cooling. Measurements with counter-cooling can be performed as low as -30 °C (-22 °F).
- Broad Viscosity Range: From 0.3 mPa.s to 10,000 mPa.s.
- Exceptional Precision: In viscosity measurements as well as temperature settings.
- Variable Inclination Angle: Ability to measure shear-dependent flow behavior.
Medical and Pharmaceutical Applications:
- Measurement Principle: Referenced in the European and US Pharmacopoeia.
- Pharma Qualification Packages: Available on request.
- Modular Combination Options: Can be combined with other Anton Paar instruments to. measure additional properties, e.g., density, turbidity, refractive index, and pH value.
- Flow-Through Filling: Enables efficient and large-scale sample throughput.
Chemical Industry Applications:
- Hermetically Closed System: Ideal for working with toxic or volatile samples.
- High Chemical Resistance: Borosilicate glass or PCTFE used for wetted parts.
- Special Software Features: For determining and evaluating polymer properties.
- Automatic Filling: Combination with autosampler available.
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
Standards
ASBC
Beer-32: Viscosity (International Method)
Wort-13B: Viscosity Rolling Ball Method
DIN
53015
DIN EN ISO
12058-1
Pharmacopoeia Europe (Ph. Eur.)
2.2.49 - FALLING BALL VISCOMETER METHOD
U.S. Pharmacopoeia (USP)
913 - Rolling Ball Viscometer Method
Acknowledgments
Produced from materials originally authored by Anton Paar GmbH.