The SteadyShake™ 757 and 757L are economical and compact bench top incubator shakers. The 757 occupies only 18"W x 19"D of space, and the 757L is slightly larger (20.5"W x 25.5"D) for increased flask capacity. The 757 can accommodate three 2-liter Erlenmeyer or two 2.8-liter Fernbach flasks, and the 757L five and four of these, respectively. The lid has a large viewing window and a microprocessor temperature controller maintains precise temperature control from 3°C above ambient to 70°C. A quiet fan ensures temperature uniformity throughout the chamber. The brushless, maintenance-free drive motor generates speeds from 40 to 400 RPM which is displayed on a digital readout. A triple-eccentric drive with counter-balancing weights provides stable shaking, and eliminates the inconvenience of making balancing adjustments as the load increases.
The programmable timer affords a choice of switching between a continuous run or a timed run up to 99 hours and 59 minutes. For even longer runs, each timed run can be repeated up to 999 times.
Multi-step programming is available. A program can consist of up to 9 steps and for each step you can change the time, RPM and the direction of rotation. For example, shake for 60 minutes at 300 RPM in a clockwise direction, then for 120 minutes at 250 RPM for 90 in a counter clockwise direction, followed by 200 RPM for 120 minutes in the opposite direction and so on. For applications such as the mixing of immiscible liquids or in extraction, the direction of rotation can change every 1 minute for optimum effect. To prevent over-heating, the controller shuts off the heater if the chamber temperature exceeds the set temperature by a pre-determined number of degrees. In case of a power failure, shaking automatically resumes when power is restored.
SteadyShake is a trademark of Amerex Instruments, Inc.
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