Nice to see all those great documentations! thx @drayde
We also looked into this some time ago, minimal docu on hackteria wiki
Mostly also looked at those colorimetric tests, and convert nitrate to nitrite first, using zinc. but it wasnt so easy on the first tests, and discontinued.
A comment on that colorimetric paper, it’s “all” open source, but if you read the details, the enzymatic reagents are NOT; and seemingly quite patented and commercial. I have been commenting on this as a bit of a open-washing, when only the hardware is open in a whole measurement system, but not the system itself.
I read german, so really nice to see that description. Does this method also need the nitrite conversion first?
I would also like to learn more about the electrode sensor itself. Do i see it right, that we are expecting a prize of ca 1000 $ for a sinlge one?
How could we reprocuce your setup ourselves? i’d love to do some testing myself, here in Indonesia.