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Alain Berton(France) had already around 1958 developed a series of electrochemical gas sensors, called osmopiles, pile qui sent and he miniaturized it in a portable device, commercialized by Jouan, France. And there have been others. Philips, Netherland, commercialized one from 1965 on. -- Havang(nl) ( talk) 19:51, 10 July 2015 (UTC) reply

The semiconductor gas sensors have nothing to do with electrochemical gas sensors! why is the history of them mentioned here? — Preceding unsigned comment added by 129.27.219.8 ( talk) 09:38, 23 January 2020 (UTC) reply

I have just added a link to the Wikipedia page on Chemical sensor array. Nanomaterials21 ( talk) 19:30, 3 March 2021 (UTC)Nanomaterials21 reply