Can the difference in hardness of mineral water be detected by electrical conductivity? 【Basic Knowledge】
トリイ
Hardness 11 and 1468, with an electrical conductivity difference of 13 times? Verified by actual measurements!
Is it true that the boundary between shallow wells and deep wells is a depth of 30 meters? 【Basic Knowledge】
トリイ
Why are shallow wells more prone to contamination? How does the depth affect the safety of well water?









