BWB XP - Single Point Calibration

Calibration
• It is recommended that calibrations be performed frequently for
optimum accuracy, particularly if the instrument has been unused
for a lengthy period of time. Factors such as change in room
temperature, humidity and ambient air pressure can affect
calibration and impair the accuracy of results.
• Do not attempt to calibrate the instrument until the warm-up
period has elapsed.
• The display will show the remaining warm-up period based on a
nominal 45 minute interval.
• The flame inspection port must not be opened during calibration or
measurement.
• A calibration must be performed prior to any sample
measurements being undertaken.
• The display will prompt the operator during many of the
procedures. At any time if an error is made, press the back/STOP
key to return to the previous step.
Single point calibration
1>Read
2 Auto Read
3 Calibrations
4 Set Up
1 View
2>Calib
3 Correct
4 N/A
1 Na None 5 Ba None
2>K None
3 Li. ppm
4 Ca: ppm 8 Multi
Select Calibrations from
the main menu
Select Calib
This screen displays the ions that have calibrations already
assigned. A dot (.) after the element shows the stored calibration
is single point; a colon (:) after the element indicates a multi-point
calibration (in this example Li is shown as a single point, Ca as a
multi-point).
Select the ion to be calibrated (in this example K) by pressing the
relevant numeric key or scroll and press accept. For a single
calibration enter 1 (The value displayed in brackets refers to the
previous calibration data points, if this is still correct, press accept
instead of entering a new number) and press accept.
K Calibration- ppm
Number of
Points (0):
K Calibration- ppm
Number of
Points (0): 1
K Calib- Low Cal
Aspirate Blank
Flushing chamber . . .
--- -
A screen offering the option to skip is displayed, this allows
calibration adjustment (described later) wait 4 seconds. Ensure
you are aspirating the Blank calibration standard. The screen will
update and start the Blank calibration process.
22
accept to Skip…
OR WAIT . . .
to calibrate