@ir.protus: Clear doesn't mean clean. That glass of water (or beaker) could read three times over a safe threshold limit, and you'd never know just by looking at it. Water hides its data. In the future, I will explain how to use the hardware to stop guessing — pH, TDS, conductivity, turbidity, etc. What's the last thing you assumed was fine just because it looked fine? #waterquality #labtesting #watersafety #watertreatment

Protus Tanuhandaru

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Tuesday 15 September 2026 12:50:21 GMT