Quadra family

The Quadra Tower is the evolution of Tomtec's proven Quadra pipetting technology. It is designed to fill the gap between 8 and 12-channel, hand-held pipettors and Tomtec's high-level automation. It may be used in a simple, manual mode. Individual push buttons provide the basic functions of aspirating and dispensing by simply entering the volume desired. Other push buttons select tip-loading and tip-shucking. Where feasible, the tips may be washed for economy of operation. More sophisticated pipetting sequences can be fully programmed in a simple, intuitive manner and selected for repetitive applications. This is accomplished from the front control panel. It can also be integrated into a robotic system. In essence, the mode of operation is designed for operational convenience by a variety of users, using different skill levels.

Two pipetting stations accommodate liquid transfers from reservoirs or deepwell microplates. Two other stations accommodate 96 well microplates. The Quadra tip design is unique. The maximum volume is 450µL, particularly useful if aliquoting to repetitive plates. The long, narrow end will access the bottom of a deepwell plate. The design also permits the pipeline pipetting of individual reagents using air-gap separation. The unit has a CV of 2% at 10µL.

• Easy to use
• Manual push-button operation
• Fully Programmable
• No external computer required
• 96 pipetting at one time
• High precision at low volume

QUADRA 3 - Full Walk-Away Automation

Tomtec's Quadra 3® is a different design concept for liquid handling than other robotic pipettors . The primary concept is to do more in less bench top space.

Operational Flexibility : The pipettor is serviced by a 6-station shuttle which carries resources to the pipettor for processing. The shuttle is served by four (4) cassette stackers. Each cassette stacker holds twenty-five (25) microplates, that can be twinned to handle fifty (50). The cassette stackers are interchangeable between other Tomtec products (i.e. plate washer, incubator, plate reading, plate sealing, etc.). Microplates no longer have to be handled individually. They can be moved efficiently through the entire processing protocol by use of cassette stackers. The stackers are pneumatically operated to provide the force necessary for reliable operation. They have the ability to re-stack which means they can also sort. In addition to all types of microplates, the stackers can also place specific reservoirs on the shuttle as the program requires. The stage automatically lifts plates and reservoirs from the shuttle to the pipettor. The height is precisely controlled to facilitate touching off sub-microliter aliquots. The stage is also used to load tips safely, for both personnel and equipment. The stage cannot get to full force until the tips are in safe contact with the pipettor head, otherwise it is limited to about 10 pounds of force. A full indexing stage is available to reformat from 96 to 384 to 1536 or any other matrix. When used with a single row of tips it can complete serial dilution testing in either the 8 or 12 direction or both, for synergy studies.

Enhance with Specific Application Accessories  : The value of the Quadra 3® product line is augmented with application specific accessories that are program controlled. Custom made reservoirs provide less than full plate pipetting. They are used to add Standards & Controls to the plate matrix. Serpentine reservoirs minimize dead volume. Circulated reservoirs provide continuous operation. A special live bottom reservoir is designed to keep particulate matter in suspension (i.e. magnetic beads), various vacuum boxes are available, including a fully automated version to meet the requirements of various filtration protocols. Shaking nests and temperaturecontrolled nests are also available.

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