These Total Hardness-strips <3 - >21° dH can be used to measure water hardness. Water hardness is caused by the presence of alkaline earths, primarily calcium and magnesium. Total hardness is measured as the sum of all calcium and magnesium ions.
They are delivered in a small and useful can, which allows a easy removal of each single stick and protects them for pollution and humidity.
product details
°dH-range : <3 - >21° dH
scale-gradation: <3, >4, >7, >14, >21
storage temperature: +15°C to +25°C
storage life: storage in a.m. temperature range, can closed, minimum durability is printed on package
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