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Surface Tension measuring instruments

Surface tension is a property of the surface of a liquid that allows it to resist an external force.  We come across many applications of Surface Tension in our daily life, the use of detergent, soap, shampoo, creams, branded juice, soft drink, bear, pharmaceutical suspensions, printing, writing, printing etc are some common process, where Surface Tension has an important role to play. The formulator needs to use various Surfactants in order to develop a product which meet users expectations and are cost effective. They need to optimize the quantity of various surfactants in order minimize/ maximize the Surface tension. There are different methods in use for the measurements of Surface Tension, which can be broadly classified as follows:


Static measurements:

  • Du Nouy Ring Method: The traditional method used to measure the Surface or Interfacial Tension. Maximum pull exerted on ring by surface is measured.

 

  • Wilhelmy Plate Method: A vertical plate of known perimeter is attached to a balance and the force due to wetting is measured.

 

  • Rod Method: A Pt- Rod is used to measure the surface tension by measuring the change in weight with respect to tme due to wetting.

 

  • Spinning Drop Method: The method is used for low IFT, the diameter of drop within a heavy phase is measured with both are rotated.

 

  • Pendent Drop Method: Surface and Interfacial Tension can be measured by this technique, even at elevated temperature and pressure. Geometry of a drop is analyzed optically.


Dynamic Method:

 

  • Bubble Pressure Method: A measurement technique for determining Surface tension at short ages, maximum pressure of each bubble is measured.

 

  • Drop Volume Method: A method for determining interfacial tension as a function of interface age, Liquid of one density is pumped into the second liquid of a different density and time between drops produced is measured.

Educational Tensiometer K6

Educational Tensiometer K6
  • Educational Tensiometer K6
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Approx. Price: Rs 3.5 Lakh / PieceGet Latest Price

Product Details:

ApplicationLaboratory
BrandKruss Gmbh,Germany
ModelK6
MethodDU Nouy Ring method
Range1- 90 mN/m
Resolution0.5 mN/m

The Simple Manual Measuring System
A basic tensiometer for rapid determination of interfacial tension and the surface tension of liquids.
KRÜSS Educational Tensiometer model K6 is used for determination of Surface tension of liquids. It uses Pt wire as torsion beam and a Pt-Ir ring for the measurement. It produces fast, easy & accurate measurements for surfactant solutions & solvents.
It is also very suitable for training purposes in schools and universities for demonstrating the action of Surface tension force in a comprehensible manner.


Features:

  • Surface tension measurement using ring method
  • Simple & user-friendly operation

  • Instrument is supplied with Pt-lr ring and a vessel

  • Result of the measurement is indicated accurately to 0.5mN/m


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Additional Information:

  • Item Code: K6
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Delhi
  • Delivery Time: 4 to 6 weeks
  • Packaging Details: Complete unit with one No. pt- Ir Ring, sample vessel, cover and operation manual
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Bubble Pressure Tensiometer BP100

Bubble Pressure Tensiometer BP100
  • Bubble Pressure Tensiometer BP100
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Approx. Price: Rs 26 Lakh / PieceGet Latest Price

Product Details:

BrandKRUSS GmbH, Germany
ModelBP100
ApplicationLaboratory
MethodBubble Pressure method
Range15 to 100 mN/m
Surface Age Range5 - 200000 ms

The Bubble Pressure Tensiometer from KRUSS helps to characterize the surfactants efficiency as never before. BP100 measures dynamic surface tension with high accuracy. This instrument is used to get information about wetting and drop formation in rapid processes. It helps in the development, selection & dosing of surfactants for optimum speed by characterizing mobility of surfactant for which it uses adsorption coefficient & diffusion coefficient of surfactants.


Features:


  • Measurement of the dynamic surface tension
  • 5 ms (high dynamic) up to 100 s (almost static)
  • Fully automatic measuring process
  • Determination of the adsorption and diffusion coefficient
  • Integrated compressor-no compressed air supply necessary


Application:


  • Surface-active agent development
  • Optimization of coating and printing processes
  • Development of detergents and cleansing agents
  • Optimization of spraying processes
  • Electroplating bath concentration control.

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Price may vary depending on configuration.
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Additional Information:

  • Item Code: BP100
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Delhi
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Fully Automated Surface Tensiometer K100

Fully Automated Surface Tensiometer K100
  • Fully Automated Surface Tensiometer K100
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Approx. Price: Rs 30 Lakh / PieceGet Latest Price

Product Details:

Minimum Order Quantity1 Piece
Measurement Range1-2000 mN/m
MethodsRing, Plate, Rod, Small Ring, small plate, CMC, Dynamic Contact angle, Liquid & solid densities, L
VariantsTwo variants available i.e. K100 & K100C
BrandKRUSS GmbH, Germany
ModelK100 series
ApplicationLaboratory, R&D

The Multi-Talent
The K100 is the universal instrument among tensiometers. The measuring processes have been optimized and made more exact by a high degree of automation and latest technical analysis standards. The measuring accuracy of the K100 can be additionally increased by the use of built-in ionizer. When conventional tensiometers are used to make sensitive measurements on small samples like single fibers or insulating plastics,electrostatic forces of attraction occur between the solid and the liquid surface resulting incorrect measured force or the detected surface height. KRÜSS has thought out a solution to this problem (and also applied for a patent for it): the use of an ionizer. This ionizes the air in the sample chamber for a short time and in this manner eliminates any electrostatic charges. The measurement can now be done without any interference with the highest degree of accuracy.


Features:


  • Surface and interfacial tension measurement of liquids
  • Dynamic contact angle measurements

  • Extended CMC - critical micelle concentration

  • Surface energy calculations on solids, powders, pigments, fiber

  • Measuring the density of liquids

  • Sedimentation and sediment resistance measurements

  • Built-in ionizer for eliminating electrostatic charges

  • Controlled by Advance software


Applications:


  • Surface-active agent development
  • Wetting properties of tablets (Active pharmaceutical ingredient)
  • Monitoring surface optimization in the production of polymers.

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Price may vary depending on configuration.
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Additional Information:

  • Item Code: K100
  • Pay Mode Terms: L/C (Letter of Credit),T/T (Bank Transfer)
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Single Fiber Tensiometer K100SF

Single Fiber Tensiometer K100SF
  • Single Fiber Tensiometer K100SF
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Approx. Price: Rs 45 Lakh / PieceGet Latest Price

Product Details:

ApplicationR&D
BrandKruss Gmbh,Germany
ModelK100SF
Measurement Range1-700 mN/m
MethodsRing,Plate,Rod,Small Ring,small plate,CMC,Dynamic Contact angle,Liquid & solid densities,L
Additional specsFully automated Dosing system available for CMC
Maximum Load6g
Resolution0.1 micro g

Extremely Accurate

Precision in a new dimension is made with the PC-controlled measuring system K100SF that determines the surface and interfacial tension of liquids and solids with the highest effectiveness and efficiency. The built-in ionizer ensures optimal measuring conditions. It is specially designed to measure the wettability of single fibers by contact angle measurement.It is equipped with high resolution force sensor.

 

Features


  • Surface and interfacial tension measurements of liquids

  • Determining the density of liquids

  • Fitted with high resolution force sensor

  • Fully automatic measurement of contact angle and sorption
  • Surface energy determination on powders, small plates and single fiber

  • Extended CMC Critical micelle concentration

  • Built-in ionizer for eliminating electrostatic charges

  • Controlled by "ADVANCE" software

 

Application

  • Measurment of Surface tension, Interfacial Tension & Fully automated CMC for R&D Applications
  • Characterization of natural and synthetic fibers
  • Development of carbon and glass fibers
  • Optimization of hair care products


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Price may vary depending on configuration
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Additional Information:

  • Item Code: K100SF
  • Pay Mode Terms: L/C (Letter of Credit),T/T (Bank Transfer)
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Surface Tensiometer K20

Surface Tensiometer K20
  • Surface Tensiometer K20
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Approx. Price: Rs 12 Lakh / PieceGet Latest Price

Product Details:

BrandKRUSS GmbH, Germany
ModelK20
ApplicationLaboratory
Measurement Range1-999 mN/m
MethodsRing, Plate
Measurement conditionsAt room temp and with change in temperature

KRÜSS Force Tensiometer Model K20/ K20S is an instrument to measure surface and interfacial tension of liquids using the Wilhelmy Plate or the Du Noüy Ring method. In addition to this it can also be used to determine the density of liquids.

Features:


  • Fully automatic SFT and IFT measurement

  • Calibration data is stored internally

  • Robust, max. load 50 g

  • Illuminated sample compartment

  • Wind shield

  • Adjustable feet

  • Fast positioning of the sample

  • Available in two versions ( manual and motorized platform movement)

  • Direct power or in-built battery operation.


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Price may vary depending on configuration.
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Additional Information:

  • Item Code: K20
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: New Delhi
  • Delivery Time: 6-8 weeks
  • Packaging Details: To be delivered with suitable accessories for measurements on Surface tension, additional items can be delivered on request at extra cost. packed in a box for air shipment
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Spinning Drop Tensiometer SDT

Spinning Drop Tensiometer SDT
  • Spinning Drop Tensiometer SDT
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Approx. Price: Rs 30 Lakh / PieceGet Latest Price

Product Details:

MethodSpinning drop method
Usefor measuring low interfacial tension
Measurement conditionsAmbient, of with change in temperature
Measurement Range10exp-6 mN/m to 2000 mN/m
BrandKRUSS
ModelSDT
ApplicationLaboratory


Interfacial specialist for emulsions

Microemulsions are gaining grounds wherever organic phases are to be mobilized by aqueous ones for the bioavailability of drugs, tertiary crude oil exploitation, restoration of water, solvent-free degreasing or emulsion polymerization are seen. The Tensiometer SDT from KRUSS helps in the development of mini and microemulsions as a specialist for extremely low interfacial tensions. In addition to single measurements by mouse-click, the software also allows time-controlled series measurements. It saves the results in a comfortable database together with their measuring parameters and drop images as well as the calibration data for the image scale. The plotting function plots the interfacial tension against time or the internally measured temperature. A final mouse-click, and the results are presented in a well-laid-out report.


Features


  • Low IFT measurement going down to 10-6 mN/m
  • Automatic image analysis available

  • Easy loading of test liquids

  • Illumination and speed can be set by manual controllers

  • Software also allows time-controlled series measurements

  • Saves the results in a comfortable database

  • Plotting function plots the interfacial tension against time.


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Additional Information:

  • Item Code: SDT
  • Port of Dispatch: Hamburg
  • Delivery Time: 8 weeks
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Drop Volume Tensiometer DVT50

Drop Volume Tensiometer DVT50
  • Drop Volume Tensiometer DVT50
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Approx. Price: Rs 22 Lakh / PieceGet Latest Price

Product Details:

Range0.1 -100 mN/m
Resolution0.001 mN/m
Minimum Sample Required20 ml
Power Consumption10 W
ThermostatQuick lock Fittings
External CirculatorOptional

A speedometer for surfactants

You know just how effective your surfactant is. But do you also know how quick it is?
Whether pumping, stirring or flooding: oil-water interfaces are always in motion. Just knowing the equilibrium value of the interfacial tension is no longer sufficient. The drop volume technique of the DVT50 from KRÜSS records the interfacial tension under dynamic conditions – in an interface age ranging from fractions of a second up to several minutes.
Thanks to its wide measuring range from 100 mN/m down to 0.1 mN/m and the possibility of thermostatting the liquid phases the instrument is suitable for a wide range of applications. Very simple handling during filling and cleaning as well as software control with programmed measuring sequences ensure a smooth measurement procedure with a high sample throughput.

 

Application:


  • Emulsification in cosmetics, pharmaceutical and food industries

  • Tertiary crude oil recovery

  • Solvent-free degreasing

  • Cleaning processes

  • Liquid explosives


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Price may vary depending on configuration.
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Additional Information:

  • Item Code: DVT50
  • Pay Mode Terms: T/T (Bank Transfer)
  • Port of Dispatch: Delhi
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Bubble Pressure Tensiometer BPT Mobile

Bubble Pressure Tensiometer BPT Mobile
  • Bubble Pressure Tensiometer BPT Mobile
  • Bubble Pressure Tensiometer BPT Mobile
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Product Details:

BrandKRUSS Germany
ModelBPT mobile
ApplicationIndustrial
Surface Tension15-100 mN/m
Surface age10-30000 ms
Maximum Pressure1.25 kPa
Minimum sample volume15 ml
Power Consumption2.5 W
Temperature Range0- 100 degree celcius

Surfactant content can be now checked within seconds using Surface Tension with BPT Mobile from KRUSS.With intuitive touch display,working with the BPT mobile is almost like doing analysis on a smartphone. KRUSS has also replaced the costly, high maintenance capillaries with the disposable ones.

Features:

  • Surface tension is measured using the internal pressure of bubble at an immersed capillary.
  • Continuous measurement of surface tension can be done while changing the concentration
  • Determination of surface tension dependent on surface age between 10 and 30000 ms.

Applications:

  • Checking the content of cleaner or wetting agent in industrial processes like electroplating, coating of solar cells, etching (in circuit boards).
  • Checking the cleaning as a preparation step before coating or bonding.


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