Roche Cobas 4800 System User Manual

cobas®
4800 System
3
Hardware
Systeni Manual
Pipetting
arm
Instrument
The instrument
is equipped
with
a pipetting
arm
containing eight
pipetting
channels
and
the
iSWAP
device.
During
operation,
the
pipetting
arm moves
left-and-right
(x
direction),
picks
up the required
number of
disposable
pipetting tips,
aspirates,
dispenses,
and
mixes the liquids,
and
then
ejects the used
tips into the
tip solid waste
bag.
Each
air-displacement
pipetting
channel
can
move forward-and-back
(y-direction)
and
up-and-down
(z-direction)
during
the
pipetting
operation.
A
disposable
pipetting tip
is picked up
by each pipetting
channel at
the
beginning
of a pipetting
cycle.
The pipetting
tip is ejected
into the tip
solid waste
bag
at the
completion
of
pipetting
for that
cycle.
Figure
3-7
Pipetting arm of
instrument
Roche
Diagnostics
Each pipetting
channel contains
a
pipette stop
disc which
aligns
the
disposable
pipetting
tip when it is
picked
up by
the pipetting
channel
at the beginning
of a
pipetting cycle.
Aspiration
and
dispensing
is
achieved
by
air displacement.
The
pipette
stop disc
does not
contact
the liquid
that
is
being aspirated
into
and dispensed
from
the disposable
pipetting tip.
The
pipette
stop discs must
be
cleaned
on a weekly
basis.
For additional
details, see
Weekly niaintenance
(p.
110)
A
Pipetting channel
C
Pipetting arm
B
Pipette stop disc
System
Manual
Version 1.0
45

Roche Cobas 4800 System Specifications

General

Brand	Roche
Model	Cobas 4800 System
Category	Analytical Instruments
Language	English