Specifications

ChemStation Plus Security Pack—Graphical Result Review and Result Calculation
section. The ChemStation Plus
Security Pack allows a graphical
rework of the chromatogram for
each run. This is done by setting
new integration events and apply-
ing manual events such as base-
line drawings and others without
an immediate transfer to the data-
base. The transfer takes place
after the user decides to calculate
the results with the new settings
(figure 15). As soon as new results
are created, the result transfer to
the database is performed either
for the single run, or if starting an
automated result recalculation, for
all reprocessed runs. After finish-
ing the data review in the batch
interface and closing the batch,
the temporary files will be deleted
from the local hard disk.
27
All data reanalysis cycles require a
restore of the data to the
ChemStation batch review inter-
face. The batch review interface in
the ChemStation Plus Security
Pack allows splitting the review
into a working and a calculation
Figure 15
Result calculation and automated versioning
Agilent ChemStation Plus Security Pack—Graphical Result Review and Result
Summary of version manage-
ment in the ChemStation Plus
Security Pack
Each time a new result is calculat-
ed in the ChemStation, the appli-
cation compares the values with
the result values of the last
reprocessed result copy. If it
detects a difference, it automati-
cally initializes the data storage in
the database. Each data transfer
of new results creates a new ver-
sion entry in the database so that
no data is ever overwritten. The
versioning also assures that no
“data” is lost and that a complete
“chain of events” is documented.
This ensures full data integrity
and traceability.