Has anybody compared two or more TDS meters to get a feel for how accurate and reliable they are? I rely on mine a lot to assure good water quality, but only have one meter. I'm talking about using two different meters to compare the same water sample and seeing how much they agree.
The larger the island of knowledge, the longer the shoreline of wonder.
I have two TDS meter I always get different results they are sometimes 5-10 point different. Mostly rely on the white one but might get the xiaomi as they said it gives a more accurate result only cost $4. These two costs around $2 here in the Philippines if you find a good seller.