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 like the use of detergent, soap,shampoo, creams, branded juice, soft drink, bear, pharmaceutical suspensions, printing, writing, printingetc are some common process, where Surface Tension has an importantrole 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 optimizethe quantity of various surfactants in order to 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. Maximumpull exerted on ring bysurface is measured.

 

  • Wilhelmy Plate Method: A vertical plateof 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 time due to wetting.

 

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

 

  • Pendent Drop Method:Surface and Interfacial Tension canbe 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.

 

Bubble Pressure Tensiometer BPT Mobile

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₹ 1300000 / Piece Get Latest Price

Product Brochure
ModelBPT mobile
ApplicationIndustrial
Temperature Range0- 100 degree celcius
Power Consumption2.5 W
Surface Tension10-100 mN/m
Surface age10-30000 ms
Maximum Pressure1.25 kPa
Minimum sample volume15 ml
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.


Note:
Price may vary depending on configuration.

Spinning Drop Tensiometer SDT

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₹ 3400000 / PIECE Get Latest Price

Product Brochure
BrandKRUSS
ApplicationLaboratory
ModelIFT Meter, SDT
MethodSpinning drop method
Measurement conditionsAmbient, of with change in temperature
UseFor measuring low interfacial tension with high accuracy.
Measurement Range10exp-6 mN/m to 2000 mN/m

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 Spinning Drop Tensiometer SDT from KRUSS helps in the development of mini and microemulsions as a specialist for extremely low interfacial tensions and also measures interfacial tension with a high degree of accuracy and a particularly wide measuring range. 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.


Note:
Price may vary depending on configuration.

Force Tensiometer (Tensiio)

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₹ 3000000 / Unit Get Latest Price

Product Brochure
Model Name/NumberTensiio
BrandKRUSS
Dimension290 mm x 360 mm (W x D)
Weight29
Voltage100 to 240 VAC
Maximum Load210 g

Minimum order quantity: 1 Unit

The new generation tensiometer for liquid and solid surfaces. It takes a change of perspective that focuses on the user and his task - you and your task. It takes the will to make your lab work as convenient, flexible, and time-saving as possible. We believe that Tensíío is that kind of instrument.

Educational Tensiometer K6

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₹ 450000 / Piece Get Latest Price

Product Brochure
Model Name/NumberK6
TypeManual Tensiometer
ModelK6
ApplicationLaboratory
Dimension230 mm x 270 mm x 315 mm (W x D x H)
Weight3 Kg
Usage/Applicationsurface tension (SFT)/interfacial tension (IFT)
MethodDU Nouy Ring method
Range1- 90 mN/m
Resolution1 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


Note:
Price may vary depending on configuration.

Force Tensiometer K20

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Product Brochure
ModelK20
ApplicationLaboratory
Accuracy0.01mN/m
Measurement Range1-999 mN/m
MethodsRing, Plate
Measurement conditionsAt room temp and with change in temperature

KRÜSS Force Tensiometer Model K20 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.


Note:
Price may vary depending on configuration.

Bubble Pressure Tensiometer BP100

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Product Brochure
ModelBP100
ApplicationLaboratory
Voltage100 to 240 VAC
MethodBubble Pressure method
Range10 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.

Note:
Price may vary depending on configuration.

Surface Tension Measurement by Pendant drop Method

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₹ 5000 / Piece Get Latest Price

Product Brochure

We offer surface tension testing services using the pendant drop method on the KRÜSS DSA100 — a precision instrument known for its high-resolution optics and accurate droplet shape analysis.

This technique measures the shape of a droplet suspended from a needle to determine the liquid’s surface tension, making it ideal for analyzing surfactants, solvents, and formulations.

·         Price: ₹5,000 per sample

 

·         Output: You'll receive a detailed report including surface tension values (in mN/m), high-res drop images, and all relevant measurement parameters.

 

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Surendra Khurana (Director)
Orbit Research Associates Private Limited
Third, 304, Chopra Complex, 8 Community Centre, Preet Vihar
New Delhi - 110092, Delhi, India

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