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CI-900 Instruction Manual 8/10/2015
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If the tube is not connected to the OUT port, ambient air will be used to replenish the fruit chamber.
If the gas returning to the fruit chamber needs to be conditioned, consumables should be placed in
Chamber Out and it should be turned on. Possible reasons to condition the air returning to the fruit
chamber include scrubbing humidity (with silica gel) or scrubbing CO
2
(with soda lime). Build-up of
carbon dioxide may inhibit fruit respiration at high concentrations. At high concentrations, the
sensor fails to consume all the ethylene, so KMnO
4
could be used to scrub ethylene and not return it
to the sample system.
Figure 12: Using conditioned air to replenish the fruit chamber by connecting the IN and the
OUT (left); using ambient air to replenish the fruit chamber by disconnecting the OUT
(right).
To sample a fruit:
Open a data file to save the measurements to.
Attach the chamber to the CI-900 by screwing on the wand to the top of the chamber.
Next, connect one of the tubes from the wand to the Intake port on the front of the CI-900.
Connect the black power chamber cable to the left of the display to power the fans in the
fruit chamber.
Place the fruit inside the chamber and close it.
Observe and record the rate of change of ethylene over time with the CI-900 Monitor Mode.
Содержание CI-900
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