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topbanana
11-11-2009, 08:43 AM
hello brothers,

please kindly explain me what is the different

c.a (controled air) and m.a (modified air).:)

mad fridgie
11-11-2009, 09:27 AM
hello brothers,

please kindly explain me what is the different

c.a (controled air) and m.a (modified air).:)
Do you mean C.A (controlled atmosphere as used for storing fruits, meat etc)
This is a general term for controlling oxygen levels (not limited though) as well as temp, humidity and by nature of the beast pressure. Most use CO2, but nitrogen is also common.
M.A sorry not herd of this term

topbanana
12-11-2009, 04:27 AM
thanks mate!
it has been invaluable

controls-eng
10-03-2010, 06:54 PM
Perhaps I am a bit late with a response, but as 'mad fridge' explained, controlled atmosphere most commonly refers to the monitoring and control of temperature, carbon dioxide, oxygen, and occasionally ethylene.

Controlled atmosphere is constantly monitoring and controlling the atmosphere in a confined space.

Modified atmosphere typically refers to the one-time modification of the atmosphere, without continuous control and adjustment.