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ZooBest Alpha Total Hardness Test - GH

Water test for determining the total hardness (GH - permanent hardness) - suitable for freshwater and saltwater aquariums

Total hardness test set Instructions for use

  1. Rinse the measuring vessel with the water to be tested and fill up to the mark (corresponding to 5 ml). *
  2. Add a drop of reagent and swirl. If hardness is present, the sample will turn red in colour.
  3. Add the solution from the dropper bottle drop by drop until the colour changes from red to green.
    Swirl the measuring vessel after each drop. Count the drops!
    1 drop = 1°dH
  4. The sensitivity of the test can be increased by doubling the sample volume to e.g. 10 ml. Each drop of the test solution then corresponds to 0.5° dGH.

* The meniscus of the water surface must touch the 5 ml calibration line exactly.

Caution

Clean the cuvette after use, close the reagent bottle tightly and store in a cool, dry place away from light.
Keep out of reach of children!

Contents

10 ml reagent solution (equivalent to 200 drops), cuvette

Possible dangers

Pictograms

Signal word: Warning

Responsible company
Erwin Hennecken GmbH
Industriestraße 29
52224 Stolberg
Germany
+49 2402 7257 0

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