Roche Diagnostics
F-6
Operatorโs Manual ยท Version 3.4
13 ISE description Cedex Bio analyzer
Overview
Measuring modes
The ISE unit makes, in aqueous solutions, quantitative determinations of the
following electrolytes:
o Sodium (Na
+
)
o Potassium (K
+
)
Measurements are done using indirect mode. The samples, controls, and standard
solutions are diluted with system water 1:6 (1+5). The dilution and mixing are
performed automatically in the ISE tower.
Pipetting volumes Sample: 15 ฮผL
Diluent (H2O): 75 ฮผL
ISE measurements ISE measurements and photometric measurements can be carried out at the same
time and are independent of each other. (ISE measurements do not use cuvettes, the
reagent rotor, or the photometer.) All requested ISE measurements on a specific
sample, control, or standard solution are performed in parallel, that is, measurements
are made at each electrode at the same time.
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