Laboratory Products 59 New Surface Tension Measuring Method


Krüss has added a versatile method to its portfolio of optical interface analysis with the Constrained Sessile Drop (Constrained SD) technique. Rapid purity checks of contact angle test liquids and analyses of molten materials at high temperatures are the main areas of application.


The method observes how the opposing forces of SFT and gravity affect the shape of a droplet. If the density and dimensions of a dosed sessile drop are known, the SFT can be calculated by image analysis of its contour. For this purpose, the drop must be as large as possible, with a high curvature, while maintaining absolute symmetry. Both are achieved by placing the drop onto a perfectly circular pedestal, whose edges form a wetting barrier - hence the name constrained.


The Constrained SD extends the range of methods available to Krüss instruments that focus on determining solid material wettability on the basis of contact angles. Test liquids used for contact angle measurements are strongly influenced by even trace amounts of surface-active impurities, such as those left behind by rinsing agents, leading to false results. Checking test liquid SFT using the Constrained SD method provides an effective remedy to this problem. Such measurements are fast, require no change to the measurement setup, and can be seamlessly integrated into daily quality routines.


There are many non-standard cases where the benefits of Constrained SD become obvious. The strengths of the method lie primarily in the analysis of molten materials at high temperatures, for example hot melts whose SFT determines how they wet substrates prior to bonding.


Since a sample can be melted directly on the sample pedestal, no vessels or high-temperature dosing units are required. This, in addition to the small sample volume, prevent the need for time-consuming preparation and cleaning when using Constrained SD. The method also works well under thermally isolated conditions, which often make measurements in the high-temperature range impossible. The maximum temperature of 400°C can be extended to 2000°C using special sample platforms made of zirconium oxide in combination with a high- temperature measuring system.


Accessories for surface tension measurement using the Constrained Sessile Drop method, and the relevant module of the Krüss software ADVANCE, are now available from the manufacturer.


More information online: ilmt.co/PL/Ly9w and ilmt.co/PL/ZkE9 57753pr@reply-direct.com Join our 10,000 followers twitter.com/Labmate_online


New Laboratory Bioreactor: Enhance your cell culture workflows


IKA-Works is bringing a new bioreactor into the market. HABITAT enables the reproducible and standardised cultivation of a wide variety of cell types. It is a bioreactor, photobioreactor and fermenter in one and sets new standards with its ergonomic and efficient operation.


Whether mixing, temperature control, automation, safety or design - this new bioreactor combines all of IKA’s core competencies and yet is a true innovation. With HABITAT, IKA launches its first own bioreactor - with the aim to significantly improve the device and its handling.


HABITAT is the first laboratory bioreactor with a stand. The lid never has to be put down. The motor is hooked onto the side of the stand and the sensors are safely stowed away. All this ensures ergonomic working, a tidy laboratory and faster emptying.


IKA have developed a new mixing mode, specifically for HABITAT. In Chaotic Mode, the mixing of the reactor content follows the mathematical principle of chaotic-dynamic systems. This ensures even faster and more effective mixing.


The individual PID handling gives laboratories control options for scaling growth processes. The administrator does not have to be a simulation expert. If the temperature values are manipulated, the software checks the consequences of the change for the processes.


Depending on the type of cells to be cultivated, laboratories can use HABITAT as a bioreactor or - in combination with IKA thermostats - as a fermenter. By connecting LED light panels, HABITAT even becomes a photobioreactor. It is the only bioreactor in its class with a motor size that matches the volume.


Right from the first handle, the detachable tablet and intuitive operating software make the work easier. HABITAT’s intelligent calibration management makes the calibration of temperature, pH and DO sensors straightforward. All test components (reactor size, stirrer, etc.) and all measurements are stored. And the four integrated peristaltic pumps facilitate cell harvesting. Thus, the entire handling is simple and the learning time is short. Longer experiments can run safely without permanent personal supervision on site.


Orders for HABITAT can be placed now. Demo units are available for personal demonstrations, presented by IKA specialists. Demonstrations in the virtual reality room are also possible with the appropriate equipment.


More information online: ilmt.co/PL/Lyed 57815pr@reply-direct.com


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ProfiClave PCX Simplifying Culture Media Preparation


The ProfiClave PCX sets a new standard for simple, automated sterile culture media preparation.Connected to any BioTool dish filler it provides a reproducible filling and stacking of Petri dishes with agar.


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Emergency Safety Shower/Decontamination Booth


When time is of the essence, after an exposure to a hazardous chemical substance, any delay, even for a few seconds, can result in serious injury. OSHA and ANSI require that emergency decontamination booths be located within 10 seconds walking distance from hazardous site location.


Hemco’s new laboratory applications emergency shower booths are available with finished side exterior panels. These decontamination booths are fully assembled and ready for installation to water supply and waste systems. The shower is moulded one piece seamless of chemical resistant fiberglass and is equipped with a pull rod activated shower and push handle eye/face wash for immediately drenching of personnel that have been exposed to hazardous chemicals. The shower is equipped with frosted front strip curtains, interior grab bars, raised deck grating, and bottom or rear drain outlet. Compliant with A.N.S.I. and O.S.H.A. requirements.


More information online: ilmt.co/PL/gMpj 57577pr@reply-direct.com


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