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New High-Torque / High Speed Stirrers Introduced
Wiggens introduces a new generation of high-torque / high speed overhead stirrers with the WB-3000, WB-1800, and WB-6000 series. These units are specifically designed for high torque applications and / or high speed applications where conventional stirrers reach their limit with regard to sample viscosity or speed requirements.
The Wiggens high-torque / high speed stirrers feature a high resolution TFT display which can show not only the current speed and torque, but also the set speed, gear, control source and timer settings.
All stirrers come with a brushless DC motor, which is highly beneficial to the durability of the product. In comparison to AC motors, brushless DC motors are more robust and don’t require maintenance. In addition, all stirrers employ a two gear transmission for optimal processing of high torque at low speeds and lower torque at higher speeds. A special feature is the smart torque adjustment that enables the stirrer to maintain the set speed even if the viscosity of the sample changes during the stirring process.
The new chuck makes impeller changes easy and guarantees that the impeller sits perfectly. The housing is made of die-cast aluminium and features heat reduction fins, which contribute to keeping the unit cool in long-term applications.
An RS-232 and RS-485 input as well as analogue control make all stirrers highly versatile and adoptable for different applications. Thus, they can be used as a stand-alone product or, for instance, integrated in reaction systems. The WB-3000 and WB-1800 series are also available as remotely controllable units, with the stirring and controlling components separated. This makes them an even better fit for integration in reaction systems where the controller is required to be in an easily reachable position.
Visit
www.wiggens.com for more information.
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Application Guide for Liquid Transfers Between Different Labware Formats
Integra has prepared an explanatory application guide that demonstrates the benefits of its electronic adjustable tip spacing VOYAGER II pipette range in transferring liquid samples between different labware formats.
Many laboratory applications require liquid transfers between various labware formats. Due to varying requirements in their sample processing, different labware vessels are typically used for sample storage, processing and analysis tasks. Traditional multichannel pipettes were not designed to accommodate the wide variety of labware formats used today because their tip- to-tip spacing is optimised for use with standard 96-well microplates.
To overcome this limitation researchers have traditionally had to use single channel pipettes to perform liquid sample transfers between different labware. Although a single channel pipette offers the versatility to cope with this task, it lacks the throughput performance. Also single channel pipettes are more error prone and time-consuming to work with because more transfer steps are required compared to a multichannel pipette.
The VOYAGER II pipette offers a solution to this problem. It features electronic adjustable tip spacing, enabling the pipette to optimally access almost any labware by the touch of a button. The VOYAGER II can adjust its tip spacing anywhere between 4.5 mm and 33 mm.
Lab scientists choosing to download the new application guide can learn how to significantly reduce the many hours they spend pipetting and minimise transfer errors when pipetting liquids between tubes, vials and microplates. Example applications covered in the new application guide include screening compound libraries, genotyping, qPCR and cell seeding.
To download the new application guide please visit
www.integra-biosciences.com/sites/ voyager.html#downloads.
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Rapid Heating and Cooling Cycles for Delicate Samples
The Carbolite Gero 1700°C and 1800°C bottom loading furnaces (BLF) use an electrically operated elevator hearth which rises into the furnace chamber carrying the sample. It is an ideal choice of furnace for the handling and loading of delicate samples into a furnace chamber.
Rapid heating and cooling cycles are achieved from the electric hearth rising from its open position (down) into the furnace chamber and fully closing (up) within just four seconds. The maximum load of the hearth is 2kg.
The design of the BLF’s hexagonal chamber offers excellent temperature uniformity and is ideal for sintering high performance ceramics, melting glass under high temperature or working with modified atmospheres.
An optional inverted crucible can be used to help retain an inert atmosphere, typically nitrogen, inside the chamber. The lip of the inverted crucible is located in a groove cut into the hearth insulation and sealed by partly filling the groove with alumina or zirconia powder.
The bottom loading furnace design can also be adapted to provide solutions to particular customers’ requirements and now comes with a hearth cage with safety interlock as standard.
39628pr@reply-direct.com
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