Understanding Your Analyzer
2-13
2.5 Reagents, Controls and Calibrator
Because the analyzer, reagents (diluent, rinse, lyse, probe cleanser and E-Z cleanser),
controls, and calibrator are components of a system, performance of the system depends on
the combined integrity of all components. You should only use the Mindray-specified reagents
(see Appendix B Specifications), which are formulated specifically for the fluidic system of
your analyzer in order to provide optimal system performance. If other reagents are used, the
analyzer may not meet the performance specified in this manual and may provide unreliable
results. All references related to reagents in this manual refer to the reagents specifically
formulated for this analyzer.
Each reagent package must be examined before use. Inspect the package for signs of
leakage or moisture. Product integrity may be compromised in packages that have been
damaged. If there is evidence of leakage or improper handling, do not use the reagent.
z Store and use the reagents as directed by instructions for use of the
reagents.
z When you have changed the diluent, rinse or lyse, run a background to see
if the results meet the requirement.
z Pay attention to the expiration dates and open-container stability days of all
the reagents. Never use expired reagents.
z After installing new reagents, let the reagents stand for a while before using
them.
2.5.1 Diluent
The diluent is formulated to meet the following requirements:
To dilute the blood samples;
To provide the blood cells with an environment similar to the blood plasma;
To maintain the cell volume of each red blood cell and platelet during the count and
sizing portion of the measurement cycle;
To provide a conductive medium for impedance counting of white and red blood cells
and platelets.
2.5.2 Lyse
The lyse is formulated to meet the following requirements:
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