Quadra 4 Operator Manual
Tomtec
185
1.3 Constant Level Reservoir
A peristaltic pump is used to circulate fluid to a weir type
reservoir. It maintains a constant liquid level. This
provides a means of controlling the depth of the pipette
tip insertion when aspirating. It eliminates refilling the
reservoir for long runs of plates. It can also be used as a
means of keeping particulate matter re-suspended.
1.4 Shaker Nest
This nest has a small DC motor that swings an off center
weight. This imparts a vibrating motion to the microplate
or reservoir residing on the nest. The speed of the motor
and thus the vibrating action is adjustable. Shaker nest
can access stackers for infeeding or outfeeding
1.5 Live Bottom Reservoir
This is a more sophisticated constant level reservoir for
more exacting applications. The reservoir is fabricated
from Teflon. 24 small holes spaced across the bottom are
the inlet. This keeps the entire bottom area alive and
moving.
1.6 Thermal Retention Reservoir
This is simply a block of aluminum that provides thermal
mass for a reservoir. The aluminum may be heated or
cooled before hand and will exchange heat over a
limited period of time. This is not stacker accessible.