if you test salt water with a t.d.s meter.......you may aswell re caliberate your meter or in some cases throw away and buy a new one......if you using a nornal t.d.s meter as they only read up to 999
salt water can go up to 30000
so just a warning to those reading the thread.....not a good idea to start testeing salt water just for the hell of it.....damge can be done to the micro-board
salt water can go up to 30000
so just a warning to those reading the thread.....not a good idea to start testeing salt water just for the hell of it.....damge can be done to the micro-board