Model A
2
O
®
Advanced Automated Osmometer User’s Guide
18
matched with the sample tubes from which they were drawn. Calibration
of the A
2
O is also performed unattended. A STAT test feature is also
provided, which allows you to temporarily interrupt the measurement of
a batch of sample tubes so that samples from another tube may be mea-
sured.
The A
2
O stores all test results internally. The results are retained in
memory when the A
2
O is powered down. Additionally, the A
2
O auto-
matically displays and prints test results on a display screen and printer
tape, respectively. Further, you may access and export (to CSV files)
previous results using the A
2
O’s touchscreen. If you wish to determine
whether or not measured results have drifted over time, you may access
the A
2
O’s internal quality control graphs. Via the A
2
O’s Ethernet port,
the A
2
O provides industry-standard support for interfacing with a LIS
system. Lastly, the A
2
O supports password protection to control access
to the A
2
O’s functions.
Control and reference tubes can be included in a batch of samples. The
A
2
O can be set up to measure multiple replicates of samples, controls,
and references. The A
2
O allows you to easily design, name, save, and
access various test protocols.
The A
2
O can be configured to use only those features which are impor-
tant to you. For example, if you do not use barcodes, then barcode read-
ing can be disabled; if you do not need passwords, then the use of pass-
words can be disabled. Using the A
2
O can be as simple as loading one
or more sample tubes, loading clean sample cups, pressing the Start but-
ton, and reading the measurement results.
Function of major components
Operation of the instrument is quicker and easier once you become
familiar with the locations and functions of the components, systems
and controls described below.
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