The Macherey-Nagel Test Strips AQUADUR, For Water Hardness, Range Steps 3-5-10-15-20-25°d, Pack Of 100 are designed for determining water hardness. These test strips provide a colour change from green to red for practical water hardness testing applications.
These Macherey-Nagel AQUADUR test strips are suitable for users requiring water hardness testing with clear green to red colour change indication.
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