Issue-21 (05/2009)

Lord of the rings and plates, part III -
The Tensiometer K11Mk3

Tensiometer K11MK3
Tensiometer K11MK3

The K11 from KRÜSS has established itself in test laboratories throughout the world as a reliable tensiometer. In the new model K11MK3 KRÜSS has combined the stand-alone philosophy of the K11 with design and functional elements of the high-end instrument K100.

The K11MK3 is the expert for automatic interfacial and surface tension measurements with the ring and plate methods. The resulting values for the surface and interfacial tension are shown directly on the display, printed out as an option or transmitted to the data-logger module of the LabDesk tensiometer software. Lamella tear-off measurements (e.g. for measurements to ASTM D971) and the determination of liquid density are incorporated.

Among the new features is the safe and quick measuring body attachment with a simple plug-in connection and automatic balance clamp. The stainless steel execution makes the instrument more robust.

The improved force measurement system, which increases the resolution from 0.1 mN/m to 0.01 mN/m, is particularly beneficial. In this way smaller sample volumes can be measured with the rod method, for which high-resolution force measurements are essential.
 
K11 MK3 - an overview

  • Measurement of interfacial and surface tension and lamella tear-off measurements
  • Ring, plate and rod methods
  • Density determination of liquids
  • Automatic surface recognition, automatic measuring procedure
  • Optional: sample thermostatting
  • Optional: data transmission to printer or data-logger software



Drop shape analysis systen DSA30

Drop Shape Analysis System DSA30
Drop Shape Analysis System DSA30

New range of contact angle measuring instruments presented for the first time at ACHEMA 2009

Contact angle – surface free energy – surface tension: the DSA30 offers numerous possibilities at a competitive price. The modular system provides a wide range of high-performance solutions for studying the surfaces of solids. The contact angle measuring instrument is ideal for QA and material testing for medium-sized samples at standard measuring throughputs. A large selection of basic components and accessories offers a solution for almost any measuring problem

An overview of the DSA30

  • High-performance contact angle measuring instrument at a favorable price
  • Modular measuring system, can be extended at any time
  • High degree of automation possible
  • Static or dynamic contact angle measurements
  • High-temperature measurements and measurements at controlled relative humidity
  • Internal tilting table available





Small steps as an art form

Manual Micro Positioning x/y-stage
Manual Micro Positioning x/y-stage

PS3244 is the finely adjustable sample table for horizontal sample positioning with EasyDrop

The standard version of EasyDrop is equipped with a simple lifting table with which the height of the sample surface can be adjusted. In the horizontal axis the sample is simply positioned by hand.

From now on the lifting table can be combined with the manual micro-positioning table PS3244; this allows the sample to be positioned horizontally in the X and Y directions to an accuracy of 10 µm. The table is suitable for sample sizes up to 100x100 mm and allows placement within a movement range of 30x50 mm.

PS3244 can also be used with the micro-dosing system of the DSA100.



Drop Volume Tensiometer DVT50:
A speedometer for surfactants

Drop Volume Tensiometer DVT50
Drop Volume Tensiometer DVT50

New KRÜSS-Tensiometer celebrates the premiere at ACHEMA 2009

You may know just how effective your surfactant is. But do you also know how quick it is?

The interfacial tension value is often a question of time and speed. The DVT50 measures the dynamic interfacial tension as a function of the interface age and provides important information about the adsorption kinetics of surface-active substances.

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.

Applications

  • Emulsification in the pharmaceutical and cosmetic industries
  • Food manufacture
  • Oil production
  • Solvent-free degreasing
  • Cleaning
  • Surfactant formulation