
Water Hardness Test Strips (Tube of 100 strips)
Measuring Range / Colour Scale Graduation
>90 - >180 - >270 - >360 - >450 mg/l CaCO3
>9 - >18 - >27 - >36 - >45 °f (French Degrees of Hardness)
Measuring Range / Colour Scale Graduation
>90 - >180 - >270 - >360 - >450 mg/l CaCO3
>9 - >18 - >27 - >36 - >45 °f (French Degrees of Hardness)