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LABORATORY PRODUCTS
A New Era in Ultra-High-
Capacity Washing Lancer introduces the new 1600 LXP. By using innovative techniques, such as a new piping system and a large flexibility in the configuration of loading alternatives for different types of glassware, the new 1600 LXP is well suited to fit the market needs for high-productive labs at the same time combining energy efficiency.
“Thanks to a constant reduction in energy and water consumption levels of our washers, we have achieved one of the lowest water consumptions rates in the industry. We then do help labs to reduce their environmental impact without any compromise of washing efficiency. This is surely one of our main achievement at Lancer,” said Emmanuel Esther, Export and Marketing Manager at Getinge Lancer in Toulouse.
A durable and effective design ensures a long lifetime and trouble free ownership. With four wash levels and a chamber height of 855mm, Lancer 1600 LXP can handle many different types of loads. A wide range of accessories are available and thanks to adjustable height and interchangeable accessories, loading and handling is easy and user-friendly.
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Flexible Wetting Tests with One Hand
New Cosine Correctors for Solar Measurement Applications
Studying the Size of Nanogels Used in Developing Drug Delivery Vehicles
Wetting tests and measurements of the surface free energy on very large samples, on tilted or vertical and on enclosed surfaces – the MobileDrop from Krüss has all these possibilities in its programme. The instrument in PDA format is operated with only one hand and a notebook and requires a measuring area of only a few square centimeters. Easily exchangeable dosing heads allow the rapid use of different test liquids.
The field of application of the instrument has recently been extended by the introduction of the MobileDrop HT high- temperature version for measurements on hot surfaces. In the coating test on frying pans, scientific measurements with the MobileDrop HT have already replaced the crude ‘egg-frying’ method. A dosing head with accurately adjustable dosing volume is also available, it is intended for use with standardized measurement instructions.
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Avantes is pleased to announce the introduction of two new cosine correctors for solar measurement applications. The CC-UV/VIS/NIR-8MM has an 8mm active area and the CC- UV/VIS/NIR-5.0 is a special cosine corrector with 5° angular field of view. Solar monitoring can be achieved using a pyranometer, pyrheliometer or a spectroradiometer solution from Avantes. One of the many spectroradiometer configurations offered by Avantes, is the Solar system which is a 4 channel system with two systems each measuring from 200-2500nm. One of the systems measures the direct sun radiation through the CC-UV/VIS/NIR-5.0 cosine corrector with a 5 degrees acceptance aperture and is normally affixed to a sun tracker system. The second spectrometer system in the Solar setup measures total radiation (flux) with a standard CC-VIS/NIR cosine corrector.
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The School of Chemistry & Biochemistry at Georgia Institute of Technology has chosen the NanoSight LM-20 system to help in the characterisation of dimensional changes of nanogels used in the development of drug delivery vehicles for macromolecular therapeutics. The GIT research group of Professor Andrew Lyon works on the development and implementation of new, environmentally responsive (or ‘smart’) materials for photonic materials, bioanalysis, and biomimetics.
The approach the group is taking is to design hydrogel nanoparticles that undergo large changes in their chemical, mechanical, optical, or electrical makeup in response to a chemical stimulus, biomolecular interaction, or electromagnetic field; such materials can be viewed as amplifiers or sensitisers of the environmental event. As a result of their environmental sensitivity, nanogels have potential in a number of applications.
Straight forward Quality Control of Fats and Oils
Minimum operator involvement and high analytical productivity – these are key benefits of Metrohm’s automated thermometric titration. The method is ideal for monitoring the quality of fats and oils, namely to determine crucial parameters such as free fatty acid content and iodine value. Thermometric titration means that there is no electrical contact with titrating solutions, so samples can be titrated in a totally non-aqueous environment. The endpoint is determined automatically, not prone to operator bias and can be detected in highly coloured or turbid solutions, or even in media containing suspended solids. Moreover, the thermometric sensing probe requires no maintenance, special preparation, regeneration or calibration and can be stored dry between titrations.
Two determinations common in the analysis of fats and oils illustrate the versatility of the technique, namely the free fatty acid content and the iodine value. In both analyses, excellent agreement can be achieved with results obtained by official methods of analysis. The titrations are very fast, typically less than a minute in duration and can be easily automated by using a sample changer. Application Notes with the details on the determination of free fatty acid content and iodine value in vegetable fats and oils can be downloaded from the Metrohm webpage.
Principal user is PhD candidate, Michael Smith. He has been very impressed with the instrument. “The NanoSight has been an enabling tool for us in the characterisation of dilute nanogel samples, where DLS fails to produce reliable correlation data.
For instance, in our recent investigations of degradable nanogels, we used the NanoSight for sizing and number density estimation throughout the erosion reaction. In these studies, sample concentrations were typically very low at later stages of the degradation reaction (due to particle loss). Similarly, the NanoSight is effective at measuring the fractionated samples from Asymmetrical flow field-flow fractionation (where samples are greatly diluted following separation).”
Smith continued: “The LM-20 has also been used to characterise a variety of other particle types in the group in conjunction with other light scattering and microscopy methods, to provide topological information for various nanoparticles.”
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INTERNATIONAL LABMATE - FEBRUARY/MARCH 2010 - LABORATORY PRODUCTS
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