Page 98 -

Page 98 Stuart® Catalogue
Rockers and Shakers
Introduction
Rockers
Rockers work in a similar way to platform shakers (see below) but
are much less aggressive on the sample. Rockers utilise either a
see saw action, where the platform rocks on a central point, or
a softer 3D gyratory action where the platform moves in a three
dimensional motion about the central point. A see saw action
provides a wave motion in the sample, ideal for washing. A 3D
gyratory action very gently swirls the sample making it ideal for
delicate cell culturing, staining and de-staining procedures etc. In
some cases a tier system is available where magnetic platforms
can be stacked to increase capacity, without increasing the
footprint.
Shakers
Shakers are ideal for almost any vessel from microcentrifuge
tubes through petri dishes and microtitre plates to conical
flasks. Shakers are available with either an orbital action where
the platform moves in a circular orbit or a reciprocating linear
movement where the platformmoves back and forth horizontally.
An orbital action provides a swirling action on the sample, ideal
for aeration. A linear shaker is more aggressive making it ideal
for applications such as extractions.
A flask shaker applies the movement directly to the sample
vessel, rather than via a platform. The sample vessel, typically
a flask or bottle, is clamped around the neck and shaken in a
pivotal motion. This mimics the type of aggressive shaking action
that would be generated when a flask is shaken by hand. For
example you could use this piece of equipment during a solvent
extraction.
SSL4
Seesaw rocker
SSL1
Orbital shaker