Hardness Stripes for water (10)

10.53
14 days
GEB1152
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Hardness strips Determine the hardness of your brewing water yourselve. Easy to use: dip the strip in a sample of water, wait 1 minute and read the hardness! Graduation: 0/5/10/15/20/25 ÁD (German degrees). 10 strips per pack.