10 ANALYTICAL AND LABORATORY EQUIPMENT
Accuracy, flexibility and reliability drive automated lab process development
Demand for greater accuracy, flexibility and reliability from automated systems is driving developments in laboratory techniques as diverse as pipetting, colony counting and in vitro testing.
Les exigences d’une plus grande précision, flexibilité et fiabilité envers les systèmes automatisés favorisent le développement de techniques de laboratoire aussi divers que le pipetage, le comptage des colonies et les tests in vitro.
Die Forderung von mehr Genauigkeit, Flexibilität und Zuverlässigkeit bei automatisierten Systemen bringt die Entwicklung in unterschiedlichsten Labortechniken, wie Pipettierung, Auszählung von Kolonien und In- Vitro-Tests, voran.
R
ealising that flexibility is crucial to making laboratory automation work, Tecan
has introduced the Air LiHa (air displacement pipetting arm) for Freedom EVO workstations. Tis innovative module can be freely combined with other arms - including the Liquid LiHa (liquid displacement pipetting arm) and MultiChannel Arm (MCA) pipetting modules - to provide true parallel processing and increased workstation productivity.
Te Air LiHa uses advanced air displacement technology to offer accurate and reliable pipetting for Freedom EVO 100, 150 and 200
platforms. Tis provides greater convenience and lower maintenance requirements for applications using disposable tips by eliminating the need for system liquids.
Available with four or eight pipetting channels, the Air LiHa offers a broad volume range from 0.5 to 1000µl per channel, including free dispensing down to 0.5µl. Each pipetting channel has a user exchangeable inline filter to prevent liquid being drawn into the pipetting head which, combined with permanent pressure monitoring through Freedom EVOware, maximises process security and protects valuable samples and equipment.
Tis innovative module offers the best of both worlds by allowing a choice of pipetting technologies on the same platform, or even combining both air and liquid displacement on a single workstation, providing what the company describes as unrivalled flexibility to suit the needs of users’ applications and laboratory workflows.
In a separate development, Tecan and Siloam Biosciences have announced their intention to co-market a new automated low volume, high sensitivity microfluidic ELISA.
Te system is based on Tecan’s Freedom EVO liquid handling technology and the Siloam Biosciences’ OptiMax microplate. It offers rapid, sensitive and specific chemifluorescence-based ELISA procedures using exceedingly small sample volumes. Te speed, sensitivity and small sample requirements are achieved as a result of the novel microfluidic design of the Optimiser technology.
All reactions, including analyte capture and detection, occur within a 5µl microfluidic reaction chamber. Te novel microchannel geometry and small reaction volume favour rapid reaction kinetics. A typical assay requires only a 5µl sample and each reaction step is completed within 10 to 20 minutes. With wash times, substrate incubations and read times accounted for, a typical Optimiser technology-based ELISA can be completed within two hours. Exploiting these rapid reaction kinetics on a microscale, coupled with microplate automation on the Freedom EVO workstation, allows for extremely high sensitivity or very fast assays.
Automating the process with the Freedom EVO workstation further enhances Optimiser ELISA efficiency and increases throughput. Te Freedom EVO automatically loads analytes and reagents into the wells of the microfluidic microplate, and allows the robotic manipulation of multiple OptiMax microplates.
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