Quick surface tensions with an easy available tensiometer Ring and plate tensiometry belong to the classical methods for measuring the surface tension of liquids. The principle is to measure the weight of a meniscus hanging on a ring or plate. Our solution does not an extra force transducer as any accurate laboratory balance (better than 0.1 µg) is suitable to complete this instrument. Easy handling and operation with a modern Windows software. Both manual and automatic versions are available.
The density of a liquid can be measured as well by the immersion of a body of known volume.
laboratory balance (better 0.1 mg)
automatically motor driven movement of the ring or plate or manual movement by a linear stage
holder for a ring, plate or immersion body
The instrument allows the following measurements
automatically motor driven movement of the ring or plate or manual movement by a linear stage
holder for a ring, plate or immersion body
The instrument allows the following measurements
- surface tension of liquids
- ring and plate method
- determination of density with an immersion body
- corrections factors after Harkins and Jordan
- contact angle measurements with the immersing plate technique
- easy to handle instrument and software
- also available as manual instrument
- use with any PC or laptop
Technical Specifications
| Range of surface and interfacial tension | 1 to 1000 mN/m |
| Reproducibility of measured values | resolution: ± 0.1 mN/m(with balance ± 0.1 mg) |
| Time range | 01 s to 10 h |
| DMeasuring options: - Du Nouy ring method - Wilhelmy plate method - Density determination |
standard routine standard (optional contact andge) for liquid density < 2 g/cm³ |
| Range of contact angle measurement | 10° to 170° accuracy ±0.3° |
| Software | Windows software (free update over 1 year after purchase) |
| Temperature operating range | 10 – 50°C |
| Measurement temperature range | room temperature, (optionally 0 – 80°C) |
| Size of device (L x W x H) - manual version (without balance) - automatic version (without ballance) |
100 x 100 x 300 mm 200 x 50 x 250 mm |
| Connection to PC | RS-232 |
| Weight Measurement unit - manual version (without a balance) - automatic version (without balance) |
1 kg 2 kg |
| Power supply, external | 100 … 240 AC; to 12 VDC |
| Max. power consumption | 55 W |
| Extra accessories | Wilhelmy plate immersion body for density measurements temperature controlled cell |