Metrohm 838 Advanced Sample Processor Installation Instructions - Manual (Page 72)

5.1 Validation / GLP
66 Metrohm 838 Advanced Sample Processor, GLP validation – diagnosis
5 GLP validation – diagnosis
5.1 Validation / GLP
GLP (Good Laboratory Practice) requires, among other things, that the
precision and correctness of analytical instruments is checked at regu-
lar intervals by using SOPs (Standard Operating Procedures).
As this instrument is not a measuring instrument as such, we recom-
mend that the Sample Processor is included in an analytical system
and is validated as part of the all-embracing validation of the whole
analytical system.
Checking the electronic and mechanical assemblies of Metrohm in-
struments can and should be undertaken within the framework of regu-
lar servicing by Metrohm technicians. All Metrohm instruments are
equipped with start-up check routines which check that the relevant as-
semblies are functioning perfectly when the instrument is switched on. If
no error message appears it can be assumed that the instrument is
functioning properly. Metrohm also supplies its instruments with built-in
diagnosis programs which allow the service technicians to check the
functioning of particular assemblies should faults or malfunctions occur
and to localize them. Diagnosis programs can also be incorporated in a
validation method.