PRECISE
Meaures the surface tension using the differential pressure method – independent of immersion depth
Large bubble lifetime range: 15 ms (highly dynamic) to 100,000 ms (quasi-static)
Precise readings using optimized, application-optimised capillaries
Automatic calibration in water, monitoring of the calibration process
MULTIFUNCTIONAL
Wide range of functions with different measurement modes:
Auto Mode: Measures dynamic surface tension curves through the whole bubble lifetime range
Online Mode: Continuous measurement of adjustable period without a drift of bubble lifetime
Single Mode: Single measurement at a certain bubble lifetime
FLEXIBLE
Fast and easy set-up of the device
Intuitive operation
Portable in secure storage case
Integrated battery
Measuring the dynamic surface tension, analysing surfactants
The new SITA science line t100 is a mobile laboratory tensiometer for research and development as well as for quality control of products with surface active substances.
Using the bubble pressure method the tensiometer measure the surface tension of liquids within a large bubble lifetime range from 15 ms up to 100,000 ms.
The device automatically and acurately controls the chosen bubble lifetime without drift and complicated readjustments. The measuring results are presented numerically and graphically on a large color display.
In combination with the new windows-software SITA-LabSolution a variety of differnt laboratoy devices can be controlled comfortably and thus, laboratory processes are optimally automised.
| Auto-Mode |
| Measures the dynamic surface tension through the whole bubble lifetime range |
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• Evaluating surfactant effects • Analysing the kinetic of surfactants • Characterization of the wetting behaviour of surface active agents |
| Online Mode |
| Continuous measurement of adjustable period without a drift of bubble lifetime: |
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• Automatic measurement of temperature dependencies • Analysing the ageing behaviour • Evaluating the sample stability |
| Single Mode |
| Single measurement at a certain bubble lifetime: |
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• Control and test tasks • Concentration measurements |
Measuring the dynamic surface tension with the SITA bubble pressure method enables high precision and flexibility without difficult adjustment of the immersion depth. This is done by pumping air through a capillary into the liquid to be analyzed. The pressure within the bubble chances continuously with its radius. The surface tension is calculated from the deviation between pressure maximum and minimum. The calibration is carried out automatically with water. Thereby, the radius of the capillary is taken into account. (read more ...)
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The SITA science line t100 is a high-performance bubble pressure tensiometer that can be used for |
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• Analyzing the kinetics of surfactants in research & development • Quality control through comparison with reference and limit values • Automation of measuring and analysis tasks. |
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Due to its wide bubble lifetime range, liquids containing surfactants as well as other liquids can be measured within a large concentration range. |
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The following applications are examples for standard applications where surface tension measuring values are measured, compared and documented: |
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• Optimizing washing and rinsing processes in parts and textile cleaning • Determining the wetting agent concentration in the electroplating industry • Monitoring the Isopropyl-alcohol concentration in offset printing • Quality control in ink production |
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For your security |
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Laboratory automation with the new Windows-Software SITA-LabSolution
| • | Automation of laboratory measurements with a wide range of accessories for analysing active ingredients |
| • | User-defined sequences for recurrent measuring and controlling tasks (methods) |
| • | Intuitive operation ensures efficient preparation of experiments and evaluation of measuring results |
| • | Easy access to all functions of the tensiometer |
| • | Report function for creating measurement protocols and reports |
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Controlling a wide range of accessories Burette (fluid dosing unit) Sampler Thermostat Magnetic stirrer, (heating)stirrer |
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- Tensiometer SITA science line t100 (basic unit and sensor) - 2 capillaries PEEK type II or capillaries according to application - Power supply - USB cable - Stand - 2 sample vessels 50 ml - Operating instruction - Calibration certificate - robust and secure storage case |
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Burette (fluid dosing unit) • Active ingredient analyses |
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Sampler • Automatic measurements of a large quantity of samples for quality assurance |
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Thermostat • Automatic tempering |
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Magnetic stirrer, (heating)stirrer Sample conditioning • Homogenisation • Sample tempering |
| Surface tension | |
| Measuring range |
(10...100) mN/m (dyn/cm) |
| Measuring deviation |
max. 1% of full scale |
| Resolution | 0.1 mN/m |
| Reproducibility | 0.5 mN/m |
| Bubble lifetime |
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| Adjustable range | (15...100,000) ms, nominal |
| Measuring deviation |
max. 1 ms |
| Resolution | 1 ms |
| Control deviation |
adjustable |
| Liquid temperature | |
| Measuring range |
-20...125 °C |
| Measuring deviation | max. 0.5% of full scale, adjustable |
| Resolution | 0.1 K |
| Reproducibility | 0.3 K |
| General data |
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| Power supply | 5 V/500 mA (USB), integrated battery |
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Acceptable ambient temperature (storage /operation) |
(-20...50) °C / (10...40) °C |
| Measuring gas |
Ambient air, depressurized alternatively: inert gases, (0...300) mbar |
| Display | Colour LCD, illuminated |
| Storage | 4 GByte, 64 methods |
| Dimensions (HxWxD) | Basic unit: 200x140x60 mm3, Sensor: 200x35x90 mm3 |
| Weight | 1,870 g (basic unit and sensor) |
