Water hardness test to check the level of your water hardness. Simply dip the indicator into water for 1-2 seconds and wait for a minute for the results to appear on the indicator. Then compare them with the ones on the test.
£1.49
Water hardness test to check the level of your water hardness. Simply dip the indicator into water for 1-2 seconds and wait for a minute for the results to appear on the indicator. Then compare them with the ones on the test.
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