Hach-Lange BODTRACK II User Manual - Manual (Page 13)

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Test Run to Completion
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Print test results
The BODTrak II is compatible with the Citizen PD-24 printer, which is
available as an optional accessory (
Accessories on page 22).
1. Connect the printer cable to the serial I/O port on the instrument. Use
the gender adapter supplied with the printer to make the connection.
Make sure that the printer settings are correct (
Connect the RS232
interface on page 8).
2. Power on the instrument.
3. Push and hold the applicable channel number for approximately
5 seconds at any time during a test.
The test results move from the instrument to the printer. The
instrument sends a copy of the graphical display and a truncated
data stream (127 data points).
BODTrak II ™ procedures
C A U T I O N
Chemical exposure hazard. Obey laboratory safety procedures and
wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current material safety data
sheets (MSDS) for safety protocols.
C A U T I O N
Chemical exposure hazard. Dispose of chemicals and wastes in
accordance with local, regional and national regulations.
Procedure notes
There are three procedure variations. Select the procedure that meets
the application requirements.
• The Simplified procedure is recommended when sample seeding,
extra nutrients or buffers are not necessary. It is also recommended
when accuracy requirements are not stringent.
• The Hach GGA (glucose/glutamic acid) procedure is
recommended for all accuracy and performance checks that use
seeded GGA. It is also recommended when test accuracy is
important.
• The Hach Standard Method procedure is recommended when
samples are seeded or extra nutrients or reagents are added. Use this
procedure for the Standard Methods for the Examination of Water and
Wastewater, 21st Edition, Method 5219 D Respirometric Method.
After any of the procedure variations, do the completion steps. Refer to
Completion steps for all procedures on page 15. It is possible to use a
combination of these procedures with one instrument but in different
bottles. Only one test length can be chosen.
Before the test:
Use the applicable sample volume tables for each procedure.
If power is interrupted when the instrument is in DELAY status, the test will stop
and the status will change to CLEAR when power returns. Start the test again. If
power is interrupted when the instrument is in RUN status, the test will resume
when power returns.
Keep deionized water overnight in an incubator at 20 ºC. Shake the deionized
water to saturate with air.
Let the seed become stable overnight in the BOD incubator at a temperature of
20 ºC. Be careful not to disturb the settled solution. Pipet seed solution from the
top.
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