Roche Diagnostics
Operator’s Manual · Version 3.4 G-3
Cedex Bio analyzer Glossary
2-dimensional barcode - barcode type
Glossary
This glossary is a compendium in which to look up the
meaning of technical terms used in conjunction with the
Cedex Bio analyzer.
2-dimensional barcode A type of barcode on reagent
bottles, calibrators, and control barcode sheets. These
matrix barcodes, which use PDF417 symbology, contain
more information than traditional linear barcodes.
absorbance photometer A device used to make
absorbance photometry measurements. It consists of a
halogen light source, optical groupings, a
monochromator (diffraction grating), a preamplifier,
filters, and a diode array. See also photometer.
accuracy The absolute deviation of a result from a pre-
defined target value in percent or absolute units.
activate The process of conditioning electrodes with
Activator so that the correct potentials are measured.
activity Defines the change of absorbance signal per
time interval.
Activator Used to coat ISE electrodes, tubing and the
sample probe after cleaning procedures. (For further
information, refer to the Instructions for Use for the
Activator Bio.)
alarm A visual or audible operator notification of any
system irregularity.
Alarm button A button used to display the alarm
messages.
alarm level A level that identifies the source and
severity of a problem. There are two levels: warning, and
alarm.
alarm message A message that reports a system
irregularity. It can be viewed in the alarm monitor
screen. See Alarm button.
aliquot Portion of sample material pipetted into any
secondary cup.
alphanumeric sorting The listing of information, in a
printout or on a screen, in a pre-defined order by letters
or numbers.
analyte The constituent in the sample that is to be
determined.
analytical instrument A device or a combination of
devices used to carry out an analytical process.
analyzer unit Central analyzing unit including cooling
assembly, heating channel, rotor and insulation. Does
not include the photometer unit.
application Chemistry and method to determine a
parameter. See also test.
assay 1. A specific test.
2. The process of measuring a substance.
backup The saving of data onto supplementary storage
media such as disks or tape. If such data is required again
but is no longer available from the main storage
(analyzer hard disk), it can be restored from a backup
copy.
barcode A numeric or alphanumeric code used on
sample tubes and reagent bottles to identify the samples
and reagents. Different barcode standards are available.
See also barcode type.
barcode scan The process of reading barcode
information into the memory of an analyzer.
barcode scanner The device that reads the code from
sample or reagent barcode labels.
barcode transfer sheet (BTS) A sheet bearing a
barcode that encodes test-related (or calibrator or
control) information for an analytical instrument.
barcode type Typical sample barcode types
commonly used are Code39, NW7 (Codabar), ITF, and
Code 128.
Numbers
A
B
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