Quote:
Originally Posted by ScubaSteve
Because Calk/Alk probes seem to be pretty popular I've been thinking this over quite a bit today. I experimented making some ion-selective solid state probes a few years back that were very cheap to make. I think I can adopt this to work with calcium without too much issue and, if I'm lucky, I might even be able to do the same with all as well.
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Alk is the tricky one, but you should know that.
Mindstream claims to have it figured out, but they are lacking funding badly since a serious failure in their Kickstarter program.