BALTIC SEAENVIRONMENT PROCEEDINGS No. 59 - Helcom

Validation plays a particular role within this scheme. There-
fore, an outline of the principal procedure for validation of
analytical methods is given in Figures 2 and 3.
The Benefits of Implementing a QA System
When providing analytical data, we must recognize that reliabi-
lity and economy are decisive factors which are closely linked.
Savings made at the expense of the reliability of results can
often later be paid for dearly as this means that funds are
spent on unacceptable results. This is why an optimization of
both of these criteria is necessary if analytical work is to be
efficient. The cost of routine Quality Assurance (including the
costs of certified reference materials) can be as much as 15 %
of the cost of total analytical performance in a laboratory.
However, the benefit of implementing a sound Quality Assurance
system are substantial:
The participating laboratoy will be able to provide reliable
data and thus contribute successfully to an international
monitoring programme, such as the BMP.
Traceability of the measurement process is achieved, i.e.
the analyst is in the position to trace objectively an
analytical problem back to its source.
The self-confidence of analysts participating in a quality
assurance programme will increase.
The laboratory's analytical capacity will be more effecti-
vely utilized.
Conclusion
Considerable importance is attached to analytical information
within the framework of decision processes. This is also the
case for decisions related to environmental protection, where
growing demand for data has been realized. However, with
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