YSI 9300 Photometer - Manual (Page 126)

Test Procedure
Read the Oxygen test instructions leaflet contained in the CHEMetrics Vacu-Vials
pack. Observe these various recommendations regarding sample handling and
use of Vacu-Vials :-
1 Carry out the test in accordance with the test procedure given in the
CHEMetrics instruction leaflet. Observe the time periods given in the test
instructions.
2 Select Phot 50 on the photometer. The wavelength is set automatically.
3 Use the colorless blank ampoule provided in the Starter Pack as the blank for
setting the instrument.
4 The photometer provides direct readings in mg/l O
2
.
Note
Note for measuring dissolved oxygen in natural waters use the DO 15/20 test
(see instructions Phot.75).
Vacu-Vials is a registered trade mark of CHEMetrics Inc
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