Prerequisite: The DULCO
®
turb C is ready for operation and is set to
[AUTO]
mode.
1.
Open the flow unit by screwing it clockwise and remove the in-line flow fitting from
the cuvette.
2.
Insert the
[1000 NTU]
calibration cuvette into the DULCO
®
turb C.
3.
Turn the
[1000 NTU]
calibration cuvette one full turn in 20° steps. At each step,
wait until the displayed measured value has stabilised.
ð
Mark the point on the cuvette with the lowest NTU value with the help of the
marking ring supplied, so that the marker points towards yourself.
4.
Remove the
[1000 NTU]
calibration cuvette and insert the
[10 NTU]
calibration
cuvette into the DULCO
®
turb C.
5.
Turn the
[10 NTU]
calibration cuvette one full turn in 20° steps. At each step, wait
until the displayed measured value has stabilised.
ð
Mark the point on the cuvette with the lowest NTU value with the help of the
marking ring supplied, so that the marker points towards yourself.
6.
Remove the
[10 NTU]
calibration cuvette and insert the
[0.02 NTU]
calibration cuv‐
ette into the DULCO
®
turb C.
7.
Turn the
[0.02 NTU]
calibration cuvette one full turn in 20° steps. At each step, wait
until the displayed measured value has stabilised.
ð
Mark the point on the cuvette with the lowest NTU value with the help of the
marking ring supplied, so that the marker points towards yourself.
8.
Insert the cuvette sample with the cuvette into the DULCO
®
turb C.
9.
Close the in-line flow fitting by screwing it in an anticlockwise direction.
ð
The DULCO
®
turb C will be in
[AUTO]
mode.
For subsequent calibration, insert the calibration cuvettes into the
DULCO
®
turb C so that the marker on the marking ring faces towards you.
Operation
60
