HOME FAQs BOOKS JOBS: Help Wanted Suggestions you are here: Hotline/Forum => Letter 33057

Bottlers trying to detect ammonia with copper strips

++++

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 POST an unrelated QUESTION HOT Topics

Disclaimer: It is not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information
presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The
internet is largely anonymous; some names may be fictitious and some recommendations may be deliberately harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: