Siemens ADVIA 2120, Operator'S Manual, Page: 9 / 477

Welcome to the ADVIA 2120/2120i Hematology System 1-5
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Venoject II
Manual Closed- and Open-tube Samplers
1
2
3
Single samples and STAT samples are aspirated from the manual samplers.
In closed-tube aspiration, the capped vial is inserted upside down into the
centering collar (
1 ). The downward pressure of inserting the tube into the
centering collar will cause the needle to push up, puncture the tube closure, and
aspirate a sample.
In open-tube aspiration, the sample probe ( 2 ) is immersed into the specimen.
Pressing the push-to-aspirate plate ( 3 ) starts the sampling.
Sample identification and the type of test requested is entered by the manual
barcode reader or from the Manual Sample ID tab before starting sample
aspiration.
Unified Fluids Circuit (UFC)
The UFC assembly uses Unifluidics™
technology.
The UFC block is made up of eight acrylic
plates. Machined within these plates are the
pathways for the fluids and air flow, valves,
and four reaction chambers. The perox
reaction chamber is mounted on the outside
surface of the UFC block.
The reagent pump assembly, mounted to the
bottom of the UFC block, is also acrylic. The
pump has one membrane with seven
individual pump areas that act as diaphragms
that force the reagents into the reaction
chambers.
1
2
3
4
5
6
7
1 Hgb Reaction Chamber
(Not Visible) 4 Retic Reaction Chamber
5 Perox Reaction Chamber