Specifications

Agilent ChemStore C/S — Working with Agilent ChemStore C/S
menu item in “Data Analysis
View” or use the batch review
interface of the Agilent
ChemStation. This mode of opera-
tion is useful for analysts who
wish to perform a first pass data
review from the Agilent
ChemStation data analysis view
before transferring the approved
results to the database.
Automated mode
Results are transferred automati-
cally to the database at the end of
each run. This mode ensures that
all analytical data are transferred
into the Agilent ChemStore C/S
server database and are protected
from unattended modification.
If the same sample injection is
reanalyzed and then transferred, a
new version of the result data is
created, together with an entry in
the audit trail of the Agilent
ChemStore C/S database, thus
ensuring a full history of the injec-
tion.
File security during data
transfer
Each file that is transferred over
the network from the Chem-
Station to the ChemStore data-
base or back is protected with a
hash value. The application soft-
ware automatically calculates the
hash value prior to any data trans-
fer using a 24 character value
based on the RSA Data Security,
Inc, MD 5™ message digest algo-
rithm. The hash value is stored
with the data file. Whenever this
data file is transferred over the
network, e.g. for a reanalysis
cycle, the same message algo-
rithm calculates the hash value of
the current file and compares it
with the stored value. Any differ-
ence is reported as error and the
data transfer is interrupted.
Assignment of studies and
custom field information
Runs are stored in studies which
form the top level hierarchy of the
Agilent ChemStore C/S database.
Study access is restricted to users
8
1. Data transfer
The Agilent ChemStation Plus
concept consists of different soft-
ware components designed for the
various tasks in the chromato-
graphic laboratory. The Agilent
ChemStation manages data acqui-
sition and data analysis, and the
Agilent ChemStore C/S database
offers advanced data and result
management along with additional
sample information management
such as data organization, result
approval, and archiving. This con-
cept allows a clear separation of
result rework and result review
and offers unmatched data integri-
ty and traceability by tracking the
data history — Results in
ChemStore can only be under
review or after review completion,
results in ChemStation are under
rework. It is therefore very impor-
tant to have a secure and docu-
mented data transfer between the
software application. The specifi-
cations will offer a detailed out-
line of the data transfer including
security measures for both direc-
tions.
From Agilent ChemStation to
database
Agilent ChemStore C/S offers two
modes of data transfer from the
Agilent ChemStation into the
Agilent ChemStore C/S database –
interactive mode and automated
mode. Figure 2 shows the interac-
tive mode.
Interactive mode
Users perform the transfer manu-
ally from the Agilent ChemStation
Figure 2
Data transfer setup screen in the Agilent ChemStation