Is there any way to measure an acidity of a breath condensate? That is to measure a pH of an exhaled breath condensate. I would like to use such a sensor to daily measure my acid level in a breath condensate and correlate it with heartburn attacks as well as a measure of the impacts of my diet.
This can be very useful for patients with GERD (acid reflux) or those who suffer from a bad breath caused by the gastric acid in their stomach.
Note: ideally I would like to use it with the Raspberry Pi. For now the guys from Raspberry Pi SO sent me here saying it's a cool concept but sadly there is nothing off the shelf.
Edit: While doing the research on this question I found this interesting article on different ways of measuring the gastric acid secretion: http://www.researchgate.net/publication/49780488_Review_article_Methods_of_measuring_gastric_acid_secretion http://www.ncbi.nlm.nih.gov/pubmed/19279471