F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
19
www.felixinstruments.com
when the connection is established. The chamber either has a flat-bottom or a bottom-slit to
allow for non-destructive sampling. A fruit stem or petiole that is attached to the plant is passed
through the slit and then closed in the chamber. This allows C
2
H
4
levels to be recorded during
ripening without damaging the fruit. Leaf chambers available for the CI-340 Photosynthesis
System, from CID Bio-Science, Inc. are compatible and interchangeable with the F-900
Research Kit.
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 F-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 F-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.
Summary of Contents for F-900
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