KSV Instruments ltd

Sigma 701 - Cost effective Modular Tensiometer

Sigma 701 is a very modular computer controlled tensiometer for the measurement of the surface and interfacial tension (SFT & IFT) of liquids by Du Nouy ring or Wilhelmy Plate method. It has been designed to be a cost effective and a powerful all round Tensiometer. Sigma 701 takes the lead in easiness of operation and versatility of use.

The Sigma 701 Tensiometer is a very modular instrument which can easily be modified to fit the requirements of the user. Upgrade software packages include a software to measure Critical Micelle Concentration (CMC), dynamic contact angles (DCA), adsorption and powder wettability. Hardware up-grade package includes a high sensitivity balance which allow characterisation of wettability of single fibers.    

Standard features:

+ Full computer control and automatic operation of all measuring modes
+ On-line digital displays of measuring parameters
+ Push and Pull mode for Surface and Interfacial tension measurements, SFT & IFT
 + Automatic calculation of ring correction values according to Harkins & Jordan
   (Huh & Mason and Zuidema & Waters also available)
+ Density of Liquids
+ Single force curve measurements in SFT & IFT mode
+ Powder Wettability (contact angle of powders)
+ Adsorption and Dehydration Behaviour of Solids, Powders and Porous materials
+ Automatic zeroing, taring and reset to start point
+ User selectable and continuously variable speed of the stage drive
+ Powerful 32-bit software for presenting results and graphics on-line on screen
+ Data export facilities to image and ASCII file formats
+ Measurement protocol printout showing all measuring parameters and experimental
  conditions, and basic data

Optional features:

+ Super sensitive fiber range balance - up to 0.05 µN
+ On-line measurements of Dynamic Advancing and Receding Contact Angles, DCA
+ Automatic Critical Micelle Concentration measurements, CMC
+ Surface Free Energy of Solids, SFE (Zisman, Fowkes, Wu, Acid-Base)
+ Single Fiber Wettability
+ Wetted Length of Solids & Fibers
+ Automatic software controlled sample thermostation and stirring
+ Thermostation of two different sized sample vessels (diameters 50 and 70 mm)
+ Direct reading of sample temperature
+ Automatic dispenser for CMC measurements (Metrohm or Schott dispensers supported)
+ EXCLUSIVE ! Support for using two Metrohm Dosimat or two Schott dispensers for dilution
  CMC experiments (from very concentrated solutions to almost infinite dilution)
+ On-line measurement of sample pH
+ Special sample vessel for temperatures up to 250 oC
+ Evaporation preventer, thermostated double wall lid made of glass

Specifications

Maximum sample weight

5 g (25 g with counter weight)

Measuring ranges


 

25 mN;
0-1000 mN/m, depends on the size of the probe;
0-1000 mN/m with a standard Wilhelmy plate,
0-500 mN/m with a standard Du Nouy ring  (ASTM D971)

Resolution

1 mN

Sample stage speed

0.1 - 40 mm/min (1.7 - 667 m m/sec)

Standard sample vessels size

70 mm/50 mm (Diameter)

Max. vessel diameter

120 mm

Computer requirement

PC running any WINDOWSTM operating system

For accessories and upgrade packages for Sigma 701 follow this link

info@ksvltd.fi