Letter 33057

Bottlers trying to detect ammonia with copper strips  

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We need to know at what concentration (ppm) of anhydrous ammonia will polished copper start to oxidize (turn green).

The carbonated beverage industry uses anhydrous ammonia as a refrigerant.

A copper strip is placed in a plastic tube that is connected to the CO2 atmosphere to detect an ammonia leak. But no one can tell me at what concentration this will start to occur.

Edward Moriarty
UNIVERSAL BEVERAGE EQUIPMENT, INC. - Bensenville, Illinois, USA

Answer or follow-up on this subject (in non-commercial fashion).

 

My company is a supporting advertiser at finishing.com and we want the contact information to reach the inquirer privately.

 

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