Laboratory Products 53 Work on Bioactive Leachates from Plastic Consumables Illustrated in Video


In a well-received report in Science from 2008, Dr Andrew Holt and his group from the University of Alberta, Canada, described how chemicals used as manufacturing additives can substantially inhibit enzymatic assays and binding studies by leaching into samples from plastic consumables. Eppendorf recently visited Dr Holt’s pharmacology lab with a film crew to ask him how experimental data can be affected and what he recommends to other scientists to ensure unaffected and reproducible results. Daniel Wehrhahn, Product Manager responsible for consumables at Eppendorf, commented: ‘Dr Holt’s results clearly show that using pipette tips and microcentrifuge tubes from manufacturers that can confirm the absence of critical production additives leads to experimental results which are much more reliable and reproducible. Eppendorf high quality consumables are manufactured only from virgin polypropylene certified free of plasticisers, biocides or other unwanted additives, which could leach into buffers and solvents, leading to false positive or false negative results in bioassays. Our material also complies with the FDA requirements for olefin polymers.’


Launched via the Eppendorf consumables web page, YouTube and social networking sites, the new video will quickly gain worldwide exposure, helping other researchers choose plastic consumables which are best suited to their assays. Scientific background information, recent publications and application data is also available on the website. Eppendorf’s clean-room manufacturing processes are fully automated and subject to continuous quality monitoring. In addition, fully-automated production and special optimised molds that work without slip agents – such as Oleamide or DiHEMDA – ensure that epT.I.P.S. pipette tips® downloaded from the Eppendorf website.


, Eppendorf Tubes® and Eppendorf Plates® satisfy the requirements of demanding applications. Batch-specific purity certificates can be Circle no. 155 Highly Efficient Tool for Organic Synthesis


The versatility, reproducibility and productivity needed by Contract Research or Synthesis Laboratories is provided by the Carousel 12 Plus™ Reaction Station - the proven industry standard for productive organic synthesis. The Radleys Carousel 12 Plus Reaction Station has been designed to provide busy contract research and synthesis laboratories with an easy to use tool that simultaneously heat or cools, stirs and refluxes up to 12 samples (1-20ml) under an inert atmosphere. In addition the Carousel 12 Plus includes a host of features that make it versatile, easy to use, easy to clean and resistant to chemical corrosion as well as being energy efficient and having excellent reaction tube visibility.


A removable reflux and gas distribution head that can be easily transferred, with tubes in situ, between the Carousel 12 Plus’ heated base, cooling reservoir or support stand, provides users with a uniquely versatile system for heated and cooled reactions. Operating from ambient to 180ºC (220ºC for shorter periods) with accurate temperature control of ± 0.1ºC, the range of possible reactions with the Carousel 12 Plus is considerable. The addition of a cooling reservoir enables the Carousel 12 Plus to also perform sub-ambient reactions (-78ºC).


A fluoropolymer insulation plate that sits over the heated base acts as a barrier to heat loss enabling the Carousel 12 Plus not only to heat up faster but also to use one third less energy to reach the same temperatures as its popular predecessor. Viewing slots in the heated base provide users with an excellent view of the reaction tubes contents and stirring performance. The circular design of the Carousel 12 Plus allows users to easily rotate the unit providing access to all tubes without having to lean into the fumehood. The small benchtop footprint of the Carousel 12 Plus is especially beneficial to laboratories where fumehood space is at a premium. With no electrical or moving parts the Carousel Plus is extremely reliable. Your investment in a Carousel 12 Plus is protected by its easy to clean and chemically resistant fluoropolymer coating.


Circle no. 156 ADVERTORIAL New Colony Counter Lights the Way for Ease of Use


Stuart’s new SC6+ Colony Counter adds PC and printer connectivity, as well as LED lighting for greater comfort in longer work sessions. Replacing the popular SC6 model and offering excellent new capabilities at no additional cost, the SC6+ is ideal for all microbiology applications, particularly in the food industry.


With the latest colony counter Stuart introduces LED lighting. The light is whiter and brighter, making observation easier. The SC6+ is simple to operate, enabling fast, accurate counting of bacterial and mould colonies. Touching a petri dish on the electronic pressure pad with a felt tip pen or probe to mark a colony causes a count to register on the digital display, with an optional tone for confirmation. The black background facility helps when counting difficult, translucent colonies.


The SC6+ colony counter is supplied complete with one Wolffhuegel graticule, one segmentation disc and two centering adapters for 50 to 90mm petri dishes. A choice of magnifiers is available to aid easier counting of smaller colonies and the receiver dish may be easily removed for cleaning.


Circle no. 157


New Undergrad Hotplate Stirrers put Safety First


Quick to set up,


Safe to use, Easy to store. Introducing the NEW Stuart Undergrad Hotplate Stirrer range


The stylish new Stuart® Undergrad Hotplate Stirrers are


designed to enhance ease of use and safety in the laboratory. They incorporate unique features, such as a power-independent hot warning light and an LED indicator of the hotplate surface temperature, which help create a safer working environment. The Undergrad range from Stuart includes combination hotplate stirrer models as well as dedicated hotplates and stirrers. All the heating models are compatible with the Stuart SCT1 temperature controller and automatically detect when the controller is plugged in.


An LED temperature indicator surrounding the heater control knob on the Undergrad hotplates illuminates progressively to indicate the actual surface temperature. This provides a conspicuous visual indication that the unit is hot and also clearly differentiates the heat and stir controls. In addition, a ‘hot’ warning light flashes once the hotplate surface reaches 50ºC and continues to do so while the unit is hot, even if the unit is switched off and unplugged.


Circle no. 158


When you are setting up multiple units the Stuart®


Undergrad hotplate


stirrers are ideal, rather than spending time screwing in numerous retort rods, the Undergrad range have been designed to not only take retort rods, but also accommodate a standard retort stand underneath. And when it comes to packing them away, they have cleverly been designed to store on their side, this allows the units to be neatly and safely packed away taking up less space.


Other clever features like our LED temperature indicator, which lights up to show the approximate surface temperature and hot warning light that will continue to work even once the unit has been unplugged from the mains make the Undergrad units the obvious choice. All units are supplied with BioCote antimicrobial protection and a standard three year warranty.


www.thebesthotplatestirrer.com Find out more!!!


Please scan the QR/Mobile Tag with your smartphone for more information


   Circle no. 159


INTERNATIONAL LABMATE - JANUARY/FEBRUARY 2012


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