purpose of quality control in any laboratory is to
minimize the number of errors and to provide a feeling
of security for the laboratory personnel. Errors may be
classified is two major categories:
Errors of organization due to incorrect
identification of samples of mistakes in
transcription or in filling the results;
Technical error due to poor quality of equipment,
reagent or performance of the tests.
Quality control intended to avoid errors of organization
(a) is achieved by checking periodically the respective
procedures. A more right quality control can be applied
to the technical procedures (b) performance of
Equipment used in laboratories in particular
centrifuges, automatic cell washers, water baths,
incubators, refrigerators, freezers, microscopes,
Electronic balance, Auto Clave, micro pipettes, Hot air
oven, cell counters etc. should undergo regular quality
controls. Automated equipment should also be controlled
systematically, according to the manufacture’s
Assessment of the performance of laboratory equipment is
mandatory on three specific occasions:
On installation of the machinery.
After any repairs or adjustments which may
potentially after the function of the equipment.
If ever a doubt arises that the machine is not
addition to this, a schedule of routine and regular
checking of machine functions may be drawn up, the
interval of testing for each particular machine
depending on two main factors. These two factors are the
frequency of use of the piece of equipment, and its
expected “life” in the laboratory.
For full text of this article contact the publisher on