Personally, I do not favour testing objects in a humidity chamber as I believe it causes unnecessary damage by promoting corrosion. I prefer to treat objects that I suspect contain hidden cuprous chloride (which oxidises to cause bronze disease) by soaking them in warm (60 deg) deionised water and monitoring the increase in conductivity that occurs as the cuprous chloride is hydrolysed to form red cuprous oxide and dissolved chloride ions. I change the water every day until there is no further increase in conductivity, at which point all the cuprous chloride should have been hydrolysed. The object can then be dried and lacquered if desired. I don't usually use benzotriazole.
Regards, Barry Knight St Albans England ****** Unsubscribe by sending a message to [email protected] Searchable archives: http://cool.conservation-us.org/byform/mailing-lists/cdl/
