Specifications

ChemStation Plus Security Pack — Data Integrity, Automated Result Versioning
and Data Reanalysis
In addition, ChemStation Plus
managers can perform manual
result manipulation interactively
in the Data Analysis view without
using the batch review window.
The user-independent revision
management does not cover the
manual reanalysis of results in the
standard ChemStation data analy-
sis view. The user creates new
result versions in this review func-
tion using the manual Transfer
Data to Database command
(figure 13).
The following manual tasks in the
data analysis view require a user
selected Transfer Data to
Database command to create a
new result version, such as
• drawing a manual baseline,
• deleting a peak,
• tangent skimming of one peak,
• splitting a peak, and
• integrating manually with a
negative baseline.
Access to tasks with a user-depen-
dent creation of new results is the
only difference in the result man-
agement between the
ChemStation Security Pack man-
ager level and the ChemStation
Security Pack operator level. The
new result version in the database
is the same for both automated
and user-dependent data transfer.
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Data integrity
The Security Pack maintains full
data integrity by storing all results
along with the raw and meta data
in a relational database as shown
in figure 12.
Result revision management
Daily work in the analytical labo-
ratory often requires sample
reanalysis. The ChemStation Plus
Security Pack includes a result
versioning that stores all recalcu-
lation results from one original
injection as result versions. In
addition, the application software
includes a tool that automatically
detects new results during the
reanalysis process. This applica-
tion-controlled automated process
does not require any user interac-
tion such as Save Results or a sim-
ilar action. It is completely user-
independent and covers the fol-
lowing reanalysis steps:
• All functions in the batch
review that calculate results
such as reintegration, recalibra-
tion, execution of predefined
methods including manual
reintegration
• In the data analysis view:
Integrating, printing reports and
recalibration excluding manual
reintegration
A sequence reprocessing and all
initial review tasks (loading a
batch from disk, initial loading of
a run into the interactive data
analysis view) always create new
result versions. These reanalysis
tasks cover all activities of the
ChemStation operator thus ensur-
ing that all reanalysis steps at the
ChemStation operator level
include a user-independent ver-
sioning.
Figure 13
Manual revision management
Figure 12
Default configuration of data storage in
database