14
15. Wait exactly 12 minutes for
maximum color development.
12:00
16. At the end of the 12 minutes
waiting period, invert once to
mix. Immediately insert tube into
chamber. Close lid. Select
Scan
Sample
. Record results as Urea.
096 Urea
0.99
mg/L
Scan BLank
Scan Sample
12:00:00 001/500
17. Press
to scroll to
Calibrate
.
096 Urea
0.99
mg/L
%T/Abs
Calibrate
12:00:00 001/500
18. Press
ENTER
to select
Calibrate
.
A reverse font (light background
with dark characters) will appear
to indicate that the reading can
be adjusted.
096 Urea
0.99
mg/L
∧
,
∨
=Edit, ENTER=Save
∧
+ENTER=Default
12:00:00 001/500
19. Press
or
to
adjust the value shown to the
concentration of the prepared
standard, 1.00 in this example.
NOTE: A maximum adjustment of
25% is possible.
096 Urea
1.00
mg/L
∧
,
∨
=Edit, ENTER=Save
∧
+ENTER=Default
12:00:00 001/500
Calibration
Summary of Contents for 3684-01
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