Fig. 4From: The use of gels in localized dechlorination treatments of metallic cultural heritage objectsDetermination of chlorides in gels used for the dechlorination of Cu objects (2020373, 2020374 and 2020378) electrochemically treated with a 3%w/w Agar gel with 1%w KNO3 at − 0.192 V/SCEBack to article page